Number of results: 84,314
The graph of the equation y=x^3-x is symmetric with respect to which of the following? a) the x-axis b) the y-axis c) the origin d) none of these Answer: c 2) The graph of an odd function is symmetric with respect to which of the following? a) the x-axis b) the y-axis c) the ...
Sunday, August 10, 2008 at 12:22pm by Lucy
Oops, forgot to mention that the answer for problem 2 is d.
Sunday, August 10, 2008 at 12:22pm by Lucy
Which of the following results in the graph of f(x)=x^2 being expanded vertically by a factor of 3 and reflected over the x-axis? a) f(x)= (1/3)x^2 b) f(x)= -3x^2 c) f(x)= (-1/x^2)+3 d) f(x)=(-1/3)x^2 Answer: d Thanks for checking my answers
Sunday, August 10, 2008 at 12:26pm by Lucy
In both case I agree. In 1) the function is odd and therefore symmetric about the origin In 2)again an odd function is symmetric about the origin, so none of the above Definition of Odd Function A function with a graph that is symmetric with respect to the origin. A function ...
Sunday, August 10, 2008 at 12:22pm by Damon
I agree about the sign change but your answer d makes the graph shorter, not taller. I think b)
Sunday, August 10, 2008 at 12:26pm by Damon
Write the polynomial equation of least degree that has the roots: -3i, 3i, i, and -i. Answer: (x+3i)(x-3i)(x-i)(x+i)=x^4+x^3-x^3i+9x^2+9x-9xi-9i 2)Determine if the expression 4m^5-6m^8+m+3 is a polynomial in one variable. If so, state the degree. Answer: It is a polynomial in ...
Saturday, August 23, 2008 at 1:32pm by Lucy
If f(x)=4x^2 and g(x)=2/x, find [g x f](x). Answer: -1/2x^2 2) Are f(x)=1/2x+5 and g(x)=2x-5 inverses of each other? Answer: no
Saturday, August 23, 2008 at 1:37pm by Lucy
Write the slope-intercept form of the equation of the line that passes through the point (-5,4)and has a slope of -1. Answer: y=-x-1 2)Solve the system of equations algebraically: 1/3x+1/3y=1 and 2x+2y=9 Answer: no solution
Saturday, August 23, 2008 at 1:41pm by Lucy
Use the Remainder Theorem to find the remainder of (x^3-5x^2+7x+3)/(x-2). State whether the binomial is a factor of the polynomial. Answer: Remainder = 1, not a factor 2) Determine the slant asympotte for f(x)=(x^2-5x-3)/x Answer: y=x+5
Saturday, August 23, 2008 at 1:47pm by Lucy
Determine whether the function f(x)[x+1] is odd, even, or neither. Answer: neither odd nor even 2)Find the least integral upper bound of the zeros of the function f(x)=x^3-x^2+1. Answer: upper bound, 1
Saturday, August 23, 2008 at 1:51pm by Lucy
Name all the values of x that are not in the domain of f(x)=2-x^2/x+5. Answer: x= -5 2)Find the minimum value of f(x,y)=2x-y+2 for the polygonal convex set determined by this system of inequalities: x >/= 1, x </= 3, y</=0, 1/2x+y</=5 Answer: -0.5
Saturday, August 23, 2008 at 1:57pm by Lucy
Describe the linear programming situation for this system of inequalities where you are asked to find the maximum value of f(x,y)=x+y. Answer: an optimal solution 2)Describe the linear programming situation for this system of inequalities: Answer: an optomal solution
Saturday, August 23, 2008 at 2:06pm by Lucy
A farm supply store carries 50-lb bags of both grain pellets and grain mash for pig feed. It can store 600 bags of pig feed. At least twice as many of its customers prefer the mash to the pellets. The store buys the pellets for $3.75 per bag and sells them for $6.00. It buys ...
Saturday, August 23, 2008 at 2:11pm by Lucy
your first one would be (x+3i)(x-3i)(x-i)(x+i) which is what you had, but then =(x^2 - 9i^2)(x^2 - i^2) remember i^2 = -1 = (x^2 + 9)(x^2 + 1) = .... you can finish that your second question is correct
Saturday, August 23, 2008 at 1:32pm by Reiny
Choose the statement that is true for the graph f(x) =x^3-12x. Answer: f(x) decreases for x >-2 2) Which type of critical point, if any, is present in the graph of f(x)=(x-4)^5+1 Answer: none
Saturday, August 23, 2008 at 2:15pm by Lucy
I am not familiar with the notation [g x f](x) 2) is correct
Saturday, August 23, 2008 at 1:37pm by Reiny
1) I got a remainder of 5, check your work 2) correct
Saturday, August 23, 2008 at 1:47pm by Reiny
in y=-4tan(1/2x + 3pi/8) y = -4 tan (1/2)[x + 3pi/4] so the period is 2pi/(1/2) = 4pi which is none of your choices. Did you type your questions or answers correctly?? the phase shift would be 3pi/4 radians to the left. 2) the inverse of y = cos x+3 is x = cos y+3 then cos y...
Saturday, August 30, 2008 at 8:38pm by Reiny
I suspected as much :) Your first function appears to have two zeros, but both are for positive X (approx. 0.5 and 5.0). The second one appears to have a couple of zeros somewhere around -1.4 and +1.4: would you like to check that out? (That's just from a quick sketch of the ...
Sunday, August 31, 2008 at 11:47am by David Q
Pre Calculus why is sin(-20)/cos 380 equal to tan (-200)
Sunday, November 15, 2009 at 10:07pm by Pre Calculus