Sunday

April 20, 2014

April 20, 2014

Number of results: 14,289

**Algebra2**

come on. can't tell even and odd numbers?!?!? x^5-x = x^5 - x^1 5 and 1 are both odd, so f(x) is odd 5 = 5x^0 0 is an even power, so f(x) is even x^4 + 2x^3 4 is even, 3 is odd, so f(x) is neither even nor odd.
*Wednesday, August 29, 2012 at 2:31pm by Steve*

**Calculus, check my answer, please! 1**

Did I get this practice question right? 1. Consider the following functions: f(x)=cos(x^3-x) h(x)=|x-3|^3 g(x)=1n(|x|+3) s(x)=sin^3(x) Which of the following is true? (Points : 1) f is even, h and s are odd. ***f and g are even, s is odd. h and s are odd, g is even. s is odd, ...
*Wednesday, October 2, 2013 at 12:25pm by Samantha*

**Algebra**

Polynomials with all terms in even degree are even functions, and those with all odd degree terms are odd functions. For this purpose, a constant k can be considered as k*x^0, so it is even. A mix of even and odd degree terms is neithter odd nor even. Example: f(x)=x^6+x^2+4 ...
*Friday, June 21, 2013 at 9:06pm by MathMate*

**expressing as odd & even functions**

Express P(x) = x^5 + 6 x^3 - x^2 - 2x + 5 as the sum of an odd function and even function. Podd(x)=x^5 +6x^3- 2x Peven(x)= -x^2 + 5
*Tuesday, January 30, 2007 at 2:06pm by Jen*

**Mathematics**

In such a table, without zeroes, there are 9 x 9 = 81 entries. 5 x 5 = 25 are odd-odd products (and therefore odd); 4x4 = 16 are even-even products (and therefore even) and 2x4x5= 40 are even-odd products (and therefore even). Only 25 of the 81 entries are therefore odd. The ...
*Sunday, September 7, 2008 at 11:34am by drwls*

**odd and even functions**

Using f is odd if f(-x) = -f(x) or even if f(-x) = f(x) for all real x, how do I 1)show that a polynomial P(x) that contains only odd powers of x is an odd function 2)show that if a polynomial P(x) contains both odd and even powders of x, then it is neither an odd nor an even ...
*Tuesday, January 30, 2007 at 2:04pm by Jen*

**help? math ?**

1. 1 2. To have an odd answer to an addition or subtraction , one number must be even the other odd. looking at D), 4n is always even so even - odd = odd choice is D
*Sunday, January 27, 2013 at 10:26pm by Reiny*

**Math**

Let a>b a=2n+1+2k ,n,k is positive b=2n+1 (a+b)/2=2n+1+k (a-b)/2=k If k is odd, then (a+b)/2 is even (a-b)/2 is odd If k is even, (a+b)/2 is odd (a-b)/2 is even The same method also applies if a<b (However I assume that a,b are distinct number because if a=b, (a-b)/2=0 ...
*Saturday, April 6, 2013 at 11:26pm by black_widow*

**Calculus, check my answer, please! 2**

Consider the following functions: f(x)=sin(x^4-x^2) h(x)=(|x|-3)^3 g(x)=1n(|x|)+3 s(x)=sin^3(x) Which of the following is true? h and g are even, f and s are odd. f is even, h and s are odd. h and s are even, f is odd. ***f and h are even, s is odd. f, h, and s are odd.
*Wednesday, October 2, 2013 at 12:26pm by Samantha*

**Calculus**

3. Determine whether the function is even, odd or neither. f(x)=4x^5 + 3x^3 For negative x, this function is negative of the corresponding value for positive x Therefore it is ODD In general odd powers of x are odd and even powers of x are even eg f(x ) = +x f(-x) = -x odd f(x...
*Saturday, January 16, 2010 at 7:45pm by Damon*

**math**

even if f(-x) = f(x) odd if f(-x) = -f(x) A even B neither C odd D even all even functions have axis of symmetry at y=0 all odd functions are radially symmetric about (0,0) a product of an even and an odd function is odd. y=3x^3 - x - 3 = 3x(x^2 - 1/3) - 3 so, since x^2-1/3 is...
*Monday, June 11, 2012 at 4:11pm by Steve*

**Algebra**

Let f(x) = 1 – 3x^2. Which of the following is true? Give a brief explanation. A. f is an odd function B. f is an even function C. f is neither even nor odd D. f is both even and odd I would say B because an even function is one where f(x) = f (-x), Is am correct? Is it even?
*Sunday, June 28, 2009 at 4:26pm by Jacinta*

**discrete math**

prove that if n is an integer and 3n+2 is even, then n is even using a)a proof by contraposition b)a proof by contradiction I'll try part b, you'll have to refresh me on what contraposition means here. Here is the claim we start with If n is an integer and 3n+2 is even, then n...
*Wednesday, September 27, 2006 at 8:09pm by audryana*

**Algebra**

Let f(x) = 1 – 3x^2. Which of the following is true? Please give us a brief explanation. A. f is an odd function. B. f is an even function. C. f is neither odd nor even. D. f is both odd and even.
*Wednesday, June 24, 2009 at 1:50am by Jeanna*

**Algebra**

Confused Please Help! Thanks! Let f(x) = 1 – 3x^2. Which of the following is true? Give a brief explanation. A. f is an odd function B. f is an even function C. f is neither odd nor even D. f is both odd and even
*Wednesday, June 24, 2009 at 8:58pm by Laurie*

**Algebra**

Let f(x) = 1 – 3x^2. Which of the following is true? Give a brief explanation. A. f is an odd function B. f is an even function c. f is neither odd nor even Cf is both odd and even
*Wednesday, June 24, 2009 at 1:49pm by Tammie*

**Algebra**

A. f is an odd function B. f is an even function C. f is neither odd nor even D.f is both odd and even Totally confused and would appreciate some insight. Thanks!
*Wednesday, June 24, 2009 at 8:58pm by Laurie*

**Statistics**

a roulette wheel has 40 slots evenly divided between red (even) and green (odd) slots totaling 38 and a "0" and a "00". what is the probability of the ball landing in an: A)even number < 10 B) other than an even or odd number C) odd number > 15 D) even number greater ...
*Sunday, November 21, 2010 at 8:34pm by kristina*

**math**

Would it not make logical sense that half the sums would be even and half would be odd ? e.g. 1,1 -- even 1,2 --odd 1,3 -- even ... 6,1 -- odd 6,2 -- even .. 6,6, -- even , count them if that doesn't make sense prob(odd sum) = 18/36 = 1/2
*Saturday, April 21, 2012 at 7:32pm by Reiny*

**maths**

even+odd=odd odd+odd=even odd*odd=odd even*odd=even so, A,B,D are all odd C is even because n^2 is odd and n is odd
*Thursday, June 7, 2012 at 5:14am by Steve*

**Calculus, check my answers, please? :)**

#7. None of these. Plug in -x for x and see that the graphs are not symmetric about the origin. I mean really -- part of the graph is a straight line, and part is a cubic curve. #8 ok #9 f(x) is odd, so f(-x) = -f(x) |f(-x)| = |-f(x)| = |f(x)| so, even f(x+1) is the same graph...
*Wednesday, October 2, 2013 at 11:15pm by Steve*

**MATH!**

The logic behind this is very interesting. All prime numbers except the number 2 are odd the sum of any tow odd numbers is even. Since 89563 is odd, it must have been the sum of an even and an odd. So it had to be 2 and 89561
*Friday, May 6, 2011 at 8:46am by Reiny*

**math**

If the difference is odd, one of the numbers must be even, the other odd. So, the odd must end in 5. 12-5=7, so the even number ends in 2 we know the even number does not begin with 0, so its middle digit is 8. 10-4 = 6, but we borrowed. So, 802 - 645 = 157
*Thursday, October 18, 2012 at 10:58pm by Steve*

**algebra**

It doesn't matter whether the 3 appears or not on the dice in the first roll. What matters is whether the sum of the winning roll is even or odd. The sum will be odd if one dice is an even number, and one dice is an odd number The sum will be even if both dice are even or both...
*Sunday, September 14, 2008 at 5:45pm by Jennifer*

**need help**

the sum of two odd #'s is 1.even 2.odd 3.sometimes odd 4.even most of the time
*Tuesday, June 5, 2012 at 5:05pm by janika*

**Algebra Functions**

8. Both answers are wrong. The #8 f(x) is neither even nor odd. It is the sum of an even term (x^2) and and odd term (x^3). The #9 f(x) is odd. It is the sum of two odd terms.
*Wednesday, September 5, 2007 at 10:26pm by drwls*

**math**

Nice trick there tchrwill. But too bad it doesn't work if the question ask for an even number of consecutive numbers, you know, like ask for 4 consecutive instead of 3, or 5 or 7 or any odd number. Sorry Jake1234 Find 4 consecutive numbers that sum to 26. 26/4 = 6.5 makign the...
*Tuesday, November 20, 2007 at 5:40pm by tchrwill*

**math**

remember that the sum of any 2 odd integers are even and the sum of 2 evens is even e.g. 3+5=8 and 4+12=16 but the sum of an even and an odd is odd e.g. 3+6=9 so can you reason it out?
*Saturday, October 5, 2013 at 7:33pm by Reiny*

**math**

I know It's probably an easy question but I don't know remember how to do it. Show the work to determine if the relation is even, odd, or neither. a ) f(x) = 2x^2 - 7 b) f(x) = -4x^3 - 2x c) f(x) = 4x^2 - 4x + 4 If f(-x) = f(x), for any x, the function is even. If f(-x) = -f(x...
*Monday, August 20, 2007 at 10:48pm by manny*

**discrete math**

Prove by contradiction that for any even integer a and any odd integer b, 4 does not divide (a^2 + 2b^2). Proposition: That 4k (k is any integer) = a^2 +2b^2, and a is even, and b is odd. But 4k is even (product of any integer and 4), so a^2 must be even, as 2b^2 is even. ...
*Wednesday, March 7, 2007 at 1:45am by romulo*

**Maths**

yes, on a,b. c) N=((INT N/2)+1)^2-(INT(N/2))^2 d)Let N be and even number, and M an even number. (N+1)(M-1) is the product of two odd numbers = NM+M+N-1 BUt NM is even (the product of two evens), M is even, N is even, so NM+M+N is even. If one subtracted, then the product of ...
*Thursday, November 20, 2008 at 1:16pm by bobpursley*

**math**

When y = 3, which of the following is FALSE? A. y is prime and y is odd B. y is odd or y is even C. y is not prime and y is odd D. y is odd and 2y is even
*Tuesday, December 11, 2012 at 7:37am by Buster*

**math**

OOps sorry 2 odd numbers=odd 1 odd,1 even = even
*Wednesday, September 3, 2008 at 9:30pm by cam*

**university**

if n is even, n^2+n+1 is odd if n is odd, n^2 is odd, so n^2+n+1 is odd I think you meant 2∤n^2+n+1
*Wednesday, March 27, 2013 at 11:01am by Steve*

**algebra, help please**

17 is odd. 1) If you add, subtract, or multiply 2 even numbers, the result will be even. 2) If you multiple an even and a odd number, the result is even. So 3 is going to be key, being the only odd number. You know that you cannot MULTIPLY 3 by any of the numbers, because that...
*Thursday, February 4, 2010 at 4:45pm by Anonymous*

**Math**

Have you come across the formula P(A or B) = P(A) + P(B) - P(A and B) so we have P(A or B) = 2/3 + 1/6 - 0 = 5/6 let me illustrate with an example: Sam has 12 identical boxes in front of him. Inside 8 of the boxes are placed even numbers, inside 2 of them are placed odd ...
*Wednesday, November 18, 2009 at 8:38pm by Reiny*

**Math**

consecutive integers are one unit apart, so 3 of them would be x, x+1, and x+2 both even or odd consecutive integers are 2 units apart, you would define 3 of them as x, x+2, x+4 whether you x comes out as either even or odd will depend on the sum that is given. the sum of 3 ...
*Wednesday, June 3, 2009 at 9:05pm by Reiny*

**Math**

investigation: x=-2 , (x^2 - 5x)^2 - 34 = 162 x=-1 , (x^2 - 5x)^2 - 34 = 2 x=0 , (x^2 - 5x)^2 - 34 = -34 x=1 , (x^2 - 5x)^2 - 34 = -18 x=2 , (x^2 - 5x)^2 - 34 = 2 x=3 , (x^2 - 5x)^2 - 34 = 2 x=4 , (x^2 - 5x)^2 - 34 = -18 x=5 , (x^2 - 5x)^2 - 34 = -34 x=6 , (x^2 - 5x)^2 - 34 = ...
*Monday, January 30, 2012 at 11:47pm by Reiny*

**Math (precalculus)**

I have a question about the symmetry of graphs, but maybe it's more of a simple factoring question... Why is f(x)=x+(1/x) odd, while h(x)=x-x^2 is neither even nor odd? I understand that f(-x)=-x-1/x=-(x+1/x)=-f(x) is odd because f(x)=f(-x). Then for h(-x)=-x-x^2...why can't ...
*Sunday, October 26, 2008 at 3:41pm by Lucy*

**Algebra2**

Check Please? Determine if the given function is even, odd or neither. 1. f(x) = 3x^4 - 2x^2 =Even. 2. f(x) = x^3 + x = Odd.
*Thursday, November 29, 2012 at 3:40pm by Pam*

**Algebra2**

even if f(-x) = f(x) odd if f(-x) = -f(x) even if all powers are even odd if all powers are odd remember that 0 is an even power
*Wednesday, August 29, 2012 at 2:31pm by Steve*

**Math**

You could have EO, or OE prob(EO) = (/12)(1/2) = 1/4 prob(OE) = (/12)(1/2) = 1/4 so prob of one even one odd = 1/4 + 1/4 = 1/2 Another way: make a chart with DIE1 on top and DIE2 on the side. there will be 36 outcomes, 18 even sums and 18 odd sums. (notice that the sum of an ...
*Saturday, June 13, 2009 at 10:42am by Reiny*

**math**

Can 2 odd numbers add to an even or 1 odd and 1 even to an even?
*Wednesday, September 3, 2008 at 9:30pm by cam*

**math**

n and n+3 If n is even (not prime), n+3 is odd If N is odd, n+3 is even (not prime) 2 is the only even prime number, all bigger ones are divisible by 2.
*Tuesday, February 16, 2010 at 5:19pm by Damon*

**math**

n and n+3 If n is even (not prime), n+3 is odd If N is odd, n+3 is even (not prime) 2 is the only even prime number, all bigger ones are divisible by 2.
*Tuesday, February 16, 2010 at 6:10pm by Damon*

**advanced funtions**

when u have an even power, the value of y will always be positive, when u have an odd power, the value of y will be negative for x < 0 The higher the power the steeper the slope will be the graphs of x^n for even and odd n's are the same except that they are inverted around...
*Wednesday, February 9, 2011 at 3:42pm by Nadir*

**Math**

If a and b are positive odd integers, then prove that one of (a+b)/2 and (a-b)/2 are even or odd number. I mean in the above numbers one is odd and one is an even number.
*Saturday, April 6, 2013 at 11:26pm by Steve*

**math**

4 & 6 odd no add to 50 but 5any odd add nt total 50. because any two odd no. and multiple 2 are add is even but odd no. any odd time are add total is odd no
*Monday, December 3, 2012 at 1:37pm by r!!?@rd*

**math**

Odd functions are symmetrical about the origin. Let f(x) be an odd function. f(-x) = -f(x). If its an odd function, it will satisfy this condition. Even functions are symmetrical about that y axis. Let g(x) be an even function. g(-x) = g(x). If its an even function, it will ...
*Wednesday, April 2, 2008 at 3:33pm by Anonymous*

**trig**

The above reference should help you to answer the questions: Why does cos start with a 1 and why are the powers of x even numbers - think of what cos(0) equals, and - is cos(x) an even or odd function? Also for sin, why does sin start with an x and why are the powers odd? - ...
*Sunday, June 6, 2010 at 9:36pm by MathMate*

**Math**

fog is even, since f is even. since f(-x) = f(x), f(-g) = f(g) gof is unknown. for example, f(x) = x^2 g(x) = x g(f) = f = x^2 is even g(x) = √x g(f) = √f = x is odd g(x) = √x + 1 g(f) = √f + 1 = x+1 neither even nor odd
*Wednesday, October 3, 2012 at 11:43pm by Steve*

**Algebra**

Is a function with a fraction (1/4) an even or an odd function? Or can fractions be neither even or odd? I have to declare one or the other, so I'm not sure what to say.
*Monday, November 9, 2009 at 9:10pm by Erin*

**Calculus**

Determine if function is even, odd, or neither... f(x) = secx tanx I understand how to find if its even or odd, but the sec and tan, I dont understand. Can someone help?
*Sunday, September 6, 2009 at 9:32pm by MW*

**math**

A cube only has 6 sides but anyway on your octahedron 2,4,6,8 are even 1,3,5,7 are odd so probability of even is .5, probability of odd is .5 in other words, likely as not
*Monday, March 10, 2014 at 6:40pm by Damon*

**Geometry**

Consider the experiment of rolling a single die what is the probability of rolling an odd number? I came up with 0.5,even odds as there are 3 odd and 3 even numbers so the prob. is 0.5 Did I do this correct.
*Tuesday, September 8, 2009 at 5:00pm by Emory*

**MathLog#4**

How do you get from x^n to n^x? 2x^n - 1 will be even if n is even, but will never be odd, because 1 = x^0 is an even power. f(-x) = 2(-x)^n - 1 = 2x^n-1 = f(x) if n is even f(-x) = 2(-x)^n - 1 = -2x^n-1 ≠ -f(x) if n is odd
*Wednesday, April 4, 2012 at 11:15am by Steve*

**Math**

Let f and g be two odd functions. Prove that: a) f + g is an odd function b) g of f is an odd function I am not even sure where to start, any help that can be provided would be appreciated!
*Thursday, September 13, 2007 at 1:27pm by manny*

**MATH**

f(-x) = (-x)^2/((-x)-2)^3 = x^2/(-x-2)^3 = -x^2/(x+2)^3 If even, f(-x) = f(x) If odd, f(-x) = -f(x). So, neither even nor odd.
*Saturday, July 6, 2013 at 11:07pm by Steve*

**math**

even+odd = odd 4n is even so, what do you think?
*Friday, October 18, 2013 at 11:47pm by Steve*

**math**

I gave you examples of two odd numbers and one even and one odd number. 1, 3, 5 are odd numbers. 1 + 3 = ? 3 + 5 = ? 2, 4, 6 are even numbers. 1 + 2 = ? 3 + 2 = ?
*Wednesday, September 3, 2008 at 9:30pm by Ms. Sue*

**Reasonableness**

I'll be glad to check your answer. Do you know which are odd numbers and which are even? http://www.mathsisfun.com/numbers/even-odd.html
*Wednesday, November 2, 2011 at 4:01pm by Ms. Sue*

**math**

what will i answer if the question is " identify the symmetry" is it even/odd FUNCTION or Even/odd SYMMETRY?
*Thursday, September 15, 2011 at 4:53pm by grace*

**Math**

So this is the same as saying one odd ball and one even ball or two odd balls. 4/8 for first odd ball and 4/7 for even. 4/8 for first odd ball and 3/7 for second. To find probability of both/all events occurring , multiply the probability of the individual events. To find ...
*Wednesday, January 26, 2011 at 11:28pm by PsyDAG*

**math**

no! the only prime which is even is the number 2, all other primes are odd If we add 3 to an odd number we get an even number. e.g. 7 + 3 = 10
*Tuesday, February 16, 2010 at 6:10pm by Reiny*

**Math**

it is neither. you can test it by taking any +/- value for input e.g. let x =+2 the expression is 8 + 4 - 1 = 11 let x = -2 the expression should be 11 if the function were even should be -11 if the function was odd but it is -8 + 4 - 1 = -5 in general if a function is odd, it...
*Sunday, February 22, 2009 at 2:09pm by Reiny*

**math**

Two odds =even, ex: 1+1=2, 5+9=14, 77+3=80 ... you always get an even when adding two adds 1odd+1even =odd ex: 2+5=7, 11+8=19, 101+2=103 ... you always get an odd,
*Wednesday, September 3, 2008 at 9:40pm by ZZ*

**Calculus, check my answers, please! 3**

Did I get these practice questions right? 1. Suppose that f is an even function whose domain is the set of all real numbers. Then which of the following can we claim to be true? ***The function f has an inverse f –1 that is even. The function f has an inverse f –1, but we can'...
*Wednesday, October 2, 2013 at 12:28pm by Samantha*

**math**

1a. "Two cards are drawn" means that the order is not important. So the outcome for the cards is C(40,2) = 40*39/2! = 780 Multiply by the 6 outcomes of the independent event of the die to give 4680. b. I interpret "one even card is drawn" to mean "exactly one even card is ...
*Thursday, February 24, 2011 at 9:28pm by MathMate*

**Math**

if even: f(-x) = f(x) if odd : f(-x) = -f(x) check for a given value: e.g. x = 5 f(-5) = 5/24 f(5) = -5/24 ---- > not even f(5) = -5/24 f(-5) = 5/24 = -f(5) should be obvious that the function is odd since f(-x) = -(-x)/(x^2-1) = x/(x^2-1) = - f(x)
*Sunday, December 15, 2013 at 3:51am by Reiny*

**pre calculus**

If f(x) = f(-x) it is even If f(x) = -f(-x) it is odd. If neither is true, then it is neither even nor odd.
*Tuesday, September 25, 2007 at 10:46pm by drwls*

**Math**

To have an even sum 1. all four must be even (E) 2. all four must be odd (O) 3 two must be even, two must be odd. prob that one die lands even = 3/6 = 1/2 the same as for odd. prob of EEEE = (1/2)^4 prob of OOOO = (1/2)^4 prob of EEOO = 4!/(2!2!) (1/2)^4 sum = 1/16 + 6(1/16...
*Tuesday, February 15, 2011 at 8:35am by Reiny*

**statistics**

odd numbers = 1, 3, 5, 7, 9 even numbers = 2, 4, 6, 8 you are looking for the probability of getting 1, 2, or 3 balls with odd numbers. 5/9*4/8*3/7 = probability of selecting one odd number 5/9*4/8*4/7 = probability of selecting two odd numbers 5/9*4/8*3/7 = probability of ...
*Monday, September 13, 2010 at 10:25pm by PsyDAG*

**statistics**

odd numbers = 1, 3, 5, 7, 9 even numbers = 2, 4, 6, 8 you are looking for the probability of getting 1, 2, or 3 balls with odd numbers. 5/9*4/8*3/7 = probability of selecting one odd number 5/9*4/8*4/7 = probability of selecting two odd numbers 5/9*4/8*3/7 = probability of ...
*Monday, September 13, 2010 at 10:25pm by PsyDAG*

**math**

If you want an odd number, it cannot end with 4. If you want an even number, it has to end with 4. Odd: 417 471 741 147 Even: 174 714
*Tuesday, October 22, 2013 at 11:45am by Anonymous*

**Math**

4P = EVEN number, 7 = ODD number. EVEN + ODD = ODD. 4P + 7 = ODD number. ans. = a.
*Sunday, July 11, 2010 at 1:16pm by Henry*

**math**

4. The LCD may be the same as the denominator of one of the fractions. It will never be less than both of them. 5. The product of two odd numbers is always odd. For some m and n, let the two numbers be (2m+1) and (2n+1). Why? Any multiple of 2 is even. Add 1 to make an odd ...
*Monday, November 28, 2011 at 3:46pm by Steve*

**math**

corrected ? TWO ODDS =ODD? OR 1 ODD+1EVEN=EVEN?
*Wednesday, September 3, 2008 at 9:40pm by cam*

**Math**

is 1 really an odd number i think its was neither odd or even
*Wednesday, September 3, 2008 at 9:43pm by carle*

**math**

why 13 is odd number. what is defination of odd and even numbers
*Wednesday, October 19, 2011 at 9:34pm by ashley*

**Calculus, check my answers, please? :)**

Okay, so I think these are right, but I would appreciate if someone could check them and tell me if something is wrong and what the right answer is. I'd also appreciate an explanation if possible. :)Thank you! 7. Given that f(x)={x^3 if x ≥ 0 {x if x < 0 which of the ...
*Wednesday, October 2, 2013 at 11:15pm by Samantha*

**college algebra**

Let f denote an odd function and g an odd function. Decide whether the function h(x)=g(x) f(x) is even or odd.
*Friday, December 7, 2007 at 12:47pm by rodrigo*

**writing in math**

If you multiply two odd numbers, would you expect the product to be odd or even?
*Thursday, January 6, 2011 at 7:27pm by Ms. Sue*

**Algebra 2**

Determine whether the function is even, odd, or neither. f(x)=-4x²+5x Its odd right?
*Monday, July 4, 2011 at 4:16pm by Reanna*

**math**

add the last numbers in each number such as your example, 3+5+4+7 and if that's odd then the total is odd same for even
*Sunday, September 9, 2012 at 3:50pm by audrey*

**Discrete Mathematics**

any odd number can be written in the form 2n + 1 , where n is a positive integer. (2n+1)^2 = 4n^2 + 4n + 1 = 4(n^2 + 1) + 1 since any integer multiplied by 4 is even, the term 4(n^2 + 1) is even , adding 1 to it would make it odd.
*Sunday, September 22, 2013 at 7:01am by Reiny*

**algebra**

if n is even, then (-1)^(n+1) = -1 if n is odd, then (-1)^(n+1) = +1 if n is not an integer, then (-1)^(n+1) is undefined So, if n is even, your expression is -2 if n is odd, your expression is +2
*Sunday, February 21, 2010 at 1:39am by Reiny*

** math**

all prime numbers, except the number 2, are odd numbers. The sum of any two odd numbers is always even. So the sum of any 4 prime numbers, with the exception of that lonely 2, will always be even. e.g. 3+5+7+11 = 26 which is even.
*Monday, July 20, 2009 at 10:20pm by Reiny*

**math**

assuming you mean even and odd, just check: 2 4 6 8 1 3 5 7 9 which kind occurs an odd number of times?
*Wednesday, October 23, 2013 at 11:18pm by Steve*

**Math**

Auppose f is even but g is an arbitrary function (possibly neither even nor odd). (a) Is f o g still even? Show why or why not. (b) Is g o f even? Show why or why not.
*Wednesday, October 3, 2012 at 11:43pm by xavier*

**math**

No. There are many possible a,b,c combinations that obey the right angle rule a^2 + b^2 = c^2 and for which a, b, and c are all integers. However, if they all ODD integers, a^2, b^2 and c^2 would also be odd. That is impossible because two odd integers add (or subtract) to ...
*Thursday, August 12, 2010 at 11:08am by drwls*

**Math - Functions**

I know the following equation is definitely NOT EVEN, BUT I DO NOT KNOW WHY IT'S NOT ODD!. . . PLEASE. . .EXPLAIN THOROUGHLY!. . . y = 2(x - 1)^2 + 3 f(-x) = 2(-x - 1)^2 + 3 f(-x) does not equal f(x), therefore, not even. . . -f(x) = -[2(x + 1)^2 + 3] -f(x) = -2(-x - 1)^2 - 3...
*Monday, January 14, 2008 at 10:27pm by Anonymous*

**Math**

Determine whether the function x^3+x^2-1 is even, odd or neither. I thought it was odd because it has one negative sign is this correct
*Sunday, February 22, 2009 at 2:09pm by lt*

**math**

If the first of 1000 consecutive whole numbers is odd, their sum must be a) even b) odd c)prime d) negative Help?
*Thursday, April 11, 2013 at 10:26pm by kate*

**~*~Algebra!*~**

How do you use possible symmetry to determine whether the graph is the graph of an even function, an odd function, of a function that is neither even or odd?
*Saturday, September 1, 2007 at 4:16pm by Nickie*

**precalc**

The question is: is (root(x2+2))/x=f(x) even or odd? I got that it was odd because f(-x)=-f(x) but on the graph it does not look like it is symmetric to the origin what did i do wrong?
*Sunday, November 2, 2008 at 4:43pm by Alex*

**Math**

make a conjecture for the following show work the sum of an even and odd number. - the product of two odd numbers.
*Thursday, September 15, 2011 at 10:53pm by Geometry Help!!!!*

**Math**

a) they are odd but 1/x is undefined at x = 0 b) linear but x is odd and |x| is even c) d/dx (2^x) = 2^x ln 2 so both derivatives keep repeating but sin x is periodic
*Friday, February 14, 2014 at 1:50pm by Damon*

**Algebra Functions**

I dont understand how you determine whether a function is even, odd,or neither. Here are my problems: Determine whether the given function is even, odd, or neither. 8. f(x)=x^3-x^2 This is how I did it. f(-x)=(-x^3)- (-x^2)= (-x)(-x)(-x) - (-x)(-x) = (-x^3) -(x^2)- I got that ...
*Wednesday, September 5, 2007 at 10:26pm by Soly*

**algebra**

The function f is even and the function g is odd. Determine whether the function h(x)= f(x)/g(x) is even or, odd or neither.
*Friday, December 7, 2007 at 2:16am by danny*

**math**

Assuming that the square root of 2 is rational and is = to an even number divided by an odd number.2 multiplied by the odd number squared is= to the even number squared
*Thursday, January 20, 2011 at 10:55am by Lebogang*

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