April 19, 2014

Search: Math - complex numbers

Number of results: 225,817

Real numbers include rational, irrational, integers, and natural numbers. Real numbers form a subset of complex numbers. So when a number is not real, it is usually complex. Can you spot a complex number from the list?
Thursday, October 28, 2010 at 7:33pm by MathMate

math-complex numbers
Sketch the sets of complex numbers in the complex plane that satisfy the following: a) |z-1|=2 b) |z-3i|=2 c) |z-5+2i|=2 I'm not sure, but are you supposed to rearrange the whole thing to |z|=a+bi? So, part b would be |z|=2+3i.
Wednesday, October 9, 2013 at 9:34pm by Rin-chan-san

I am in the 5th grade and my homework tonight is about complex numbers. I have no idea how to do complex numbers, not to mention, I dont know what they are. Can you help me?
Wednesday, October 27, 2010 at 3:42pm by Jeida

Math (Complex Numbers)
Let a,b,c be complex numbers satisfying a+b+c=abc=1 and (ab+bc+ac)/3=(1/a^2)+(1/b^2)+(1c^2) The sum of absolute values of all possible ab+bc+ac can be written as (√n)/m, where n and m are positive coprime integers. What is n+m?
Thursday, May 9, 2013 at 9:55am by Mahler

Math Help
Is 3 sqrt -16 supposed to mean (sqrt 3) -16 or 3*(sqrt -16) ?? If you are talking about the square root of negative numbers, the answer will be a complex number. Are you studying complex numbers?
Friday, October 19, 2007 at 7:54pm by drwls

math-complex numbers
If z = -3+4i, determine the following related complex numbers. a)vector z b)3(vector z) c) 1/(vector z) d) |z| e) |vector z| f) (vector z)/(|z|^2)
Friday, October 11, 2013 at 10:45am by Rinchan

I am not sure what you mean by the "trig form" of a complex number. The magnitude is sqrt(7^2 + 2^2) = sqrt53 The complex unit vector is e^(i*theta) where theta = arcsin(-2/7) - -16.6 degrees or -0.29 radians Thus 7 -2i = sqrt53*e^-0.29i In the second questiuon, you seem to be...
Thursday, December 30, 2010 at 11:00am by drwls

Complex numbers - quadratic formula
Let a and b be real numbers. The complex number 4 - 5i is a root of the quadratic z^2 + (a + 8i) z + (-39 + bi) = 0. What is the other root? I did a lot of work on hand and with wolfram alpha but it doesn't simplify itself easily at all....anyone have any help to offer? Thanks
Thursday, January 9, 2014 at 11:58am by Cambridge

algebra, math
How many ordered triples of complex numbers(a,b,c) are there such that a^3- b,b^3-c,c^3-a are rational numbers, and a^2(a^4+1)+b^2(b^4+1)+c^2(c^4+1)=2[{(a^3) b}+{(b^3)c}+{(c^3)a}]
Friday, October 11, 2013 at 1:17pm by pls help quickly

How many ordered triples of complex numbers(a,b,c) are there such that a^3- b,b^3-c,c^3-a are rational numbers, and a^2(a^4+1)+b^2(b^4+1)+c^2(c^4+1)=2[{(a^3) b}+{(b^3)c}+{(c^3)a}]
Friday, October 11, 2013 at 2:43pm by frm

How many ordered triples of complex numbers(a,b,c) are there such that a^3- b,b^3-c,c^3-a are rational numbers, and a^2(a^4+1)+b^2(b^4+1)+c^2(c^4+1)=2[{(a^3) b}+{(b^3)c}+{(c^3)a}]
Friday, October 11, 2013 at 8:19pm by plss answer fast

Complex Numbers
Oh thank you so much i forgot that when you that the square root of a negative you get the complex #
Monday, January 31, 2011 at 9:03pm by Allie

12th grade - Math
The magnitude of a complex number is defined in the complex space where the real numbers are on the horizontal axis, and the complex (imaginary) part is on the vertical axis. The magnitude is defined to be the distance of the given point to the origin, namely for a complex ...
Wednesday, September 1, 2010 at 8:22am by MathMate

Calculus--complex numbers
the complex number Z satisfies Z/(Z+4)= 3+2i Find Z. please help thx!
Thursday, March 13, 2008 at 7:11am by Anne

complex numbers
the complex number Z satisfies Z+i/(1+2i)= iz Find Z. please help thx!
Tuesday, November 4, 2008 at 7:22am by Mary

complex numbers
the complex number Z satisfies (Z+i)/(1+2i)= iz Find Z. please help thx!
Tuesday, November 4, 2008 at 1:43pm by Mary

solve and simplify the answer completely by using pure imaginary numbers/complex numbers. 2x^2+3x+2=0
Thursday, December 4, 2008 at 9:20pm by anonymous

You asked this question before. I see no reason why any numbers, even complex numbers, cannot be arranged in a two-column array.
Monday, September 10, 2007 at 4:15pm by drwls

use quadratic equation x = [ -4 +/- sqrt(16 - 24) ]/6 the solution is a complex number because b^2-4ac is negative. Given your last question, I do not think you have covered complex numbers. Perhaps you have a sign error.
Tuesday, March 4, 2014 at 3:12pm by Damon

a.natural numbers Numbers that are non-negative integers, such as 1,2,12,201,... There are two definitions of natural numbers, one that includes 0, and the other one does not. Most high-school definitions include 0. b.whole numbers Whole numbers do not have decimals nor ...
Tuesday, September 1, 2009 at 10:20pm by MathMate

2k^2 = -144 k^2 = -72 Unless you have studied complex numbers you would stop here and say "there is no real solution" since you cannot take the square root of a negative. If you studied complex numbers you should know that i = √-1 so x = √-72 x = 6√2 i
Monday, March 17, 2008 at 10:21pm by Reiny

Are you familar with the method of changing a complex number of the a + bi into polar form. If not, here is a good page notice that a + bi would be a unique position on the grid, so ....
Monday, March 1, 2010 at 4:47pm by Reiny

can you please explain tep by step how to solve dividing complex numbers strictly using a graph, the complex plane. I know how to do it algebraically, but not graphically. thankyou
Saturday, June 9, 2012 at 10:34am by wendell

Algebra II
Yes, the numbers in a matrix can have any value, positive or negative, fractions, decimals and irrational numbers, not just integers from 0 to 9. They can also be complex numbers like 4 + 3.1 i [3 4] +[2 7] = [5 11] , for example
Saturday, October 27, 2007 at 7:25pm by drwls

Complex numbers
Prove algebraically that |w+z| is less than or equal to |w|+|z| for any complex numbers w and z, where || is the magnitude. After letting w = a+bi and z = c + di and doing some plugging in etc. I got that ac-bd <= b^2 + sqrt (a^2+b^2)(c^2+d^2) + d^2 But is my proof complete...
Thursday, January 2, 2014 at 11:24am by Cambridge

oops - math
silly me, forgot to include the link
Thursday, December 30, 2010 at 11:00am by Reiny

1) complex 2) complex 3) complex 4)simple 5)complex 6)complex 7)compound 8) Simple 9)simple 10)simple 11)Complex 12)complex 13)Simple
Tuesday, November 9, 2010 at 2:10pm by Tom Jameson

Maths- complex numbers
Find tan(3 theta) in terms of tan theta Use the formula tan (a + b) = (tan a + tan b)/[1 - tan a tan b) in two steps. First, let a = b = theta and get a formula for tan (2 theta). tan (2 theta) = 2 tan theta/[(1 - tan theta)^2] Then write down the equation for tan (2 theta + ...
Tuesday, February 13, 2007 at 2:45am by Jake

It looks like you have not learned about imaginary numbers or complex numbers by definition √-1 = i so -√-76 + √-125 = -√36√2√-1 + √25√5√-1 = -6√2 i + 5√5 i yes, the answer does not exist in the set of real ...
Wednesday, September 8, 2010 at 2:56pm by Reiny

Abstract Algebra
Let H={a+bi a,b is a element R, a^2+b^2=1} be a subset of the non zero complex numbers C*. Prove that H<C* under complex multiplication using the one-step subgroup test. Also describe the elements of H geometrically.
Friday, December 7, 2007 at 9:22am by Devin

These are complex numbers by the way.
Monday, November 23, 2009 at 10:35am by Nayla

Math (Complex Numbers)
Thursday, May 9, 2013 at 9:55am by Athul

Factor the polynomial as the product of factors that are irreducible over the real numbers. Then write the polynomial in completely factored form involving complex nonreal or imaginary numbers. x^4 + 20x^2 -44=0
Tuesday, January 31, 2012 at 7:38pm by Chelsea

calculate P(i) for the following polynomial p(x)=x3+2x2-5x+8 Find | z | for each of the following complex numbers and represent them on a complex plane. a. z=-3-4i b. v=5-12i c.u=7+24i d.w=-9+40i e.p=1+3i f.t=-2i g.n=4 h.m=0 i.s=(√3-i)2
Thursday, October 7, 2010 at 2:09pm by natali

How many ordered triples of complex numbers(a,b,c) are there such that a^3-b,b^3-c,c^3-a are rational numbers, and a^2(a^4+1)+b^2(b^4+1)+c^2(c^4+1)=2[{(a^3) b}+{(b^3)c}+{(c^3)a}]
Friday, October 11, 2013 at 8:08am by boss

How many ordered triples of complex numbers(a,b,c) are there such that a^3-b,b^3-c,c^3-a are rational numbers, and a^2(a^4+1)+b^2(b^4+1)+c^2(c^4+1)=2[{(a^3) b}+{(b^3)c}+{(c^3)a}]
Friday, October 11, 2013 at 10:54am by algebra,math

Math Help Please
There is a little rule of thumb that you can count on for finding zeroes of polynomials with complex roots. Complex roots always come in pairs. Each root of the pair is the complex conjugate of the other. For example, if you have a root as 4+3i, the other root must be 4-3i. If...
Wednesday, July 22, 2009 at 11:20pm by MathMate

algebra ll-imaginary numbers
do a google search for "complex numbers"
Wednesday, March 18, 2009 at 7:50am by Reiny

x^2+1=0 x^2=-1 in real numbers it cant be. so x=i and x=-i (solution in the set of complex numbers)
Saturday, April 19, 2014 at 9:03am by comet

division of complex numbers
no, use 2-3i, because (2+3i)(2-3i) = 4 - 9i^2 = 4+9 = 13 and you get rid of the complex number in the bottom
Monday, January 16, 2012 at 4:13pm by Steve

3 i or 3 times the square root of -1 If you have not had imaginary numbers in your course, the answer is no real number solution no, square root of 2 or [ sqrt 2 } Yes there is an answer to the square root of a negative number but not in real numbers. If you have not covered ...
Saturday, September 8, 2012 at 8:38pm by Damon

math b
divide complex numbers: 2+3-3i^3/1-i
Wednesday, April 1, 2009 at 8:48pm by annaiiz

simplify (8 i) (4 i) using Complex Numbers
Wednesday, September 7, 2011 at 12:43am by Peter

in real numbers there is no solution, since x^2 is always positive, so adding 9 will never be zero. In complex numbers, the solutions are 3i and -3i, since i^2 = -1.
Friday, November 23, 2012 at 2:41am by Steve

no, i entered it correctly. the unit is complex numbers and polynomials
Tuesday, February 24, 2009 at 8:31pm by isha

math b
last question finally simplify complex numbers: i^16/i^3
Wednesday, April 1, 2009 at 9:45pm by annaiiz

Simplify the following product of complex numbers. (8 + i) (-4 3i)
Wednesday, March 2, 2011 at 9:03pm by Jackster

Factor over {complex numbers} 9x^2 + 49
Monday, April 9, 2012 at 9:34am by Nathan

math-complex numbers
all are circles of radius 2, with center at various numbers. |z-c| = r has center at c. |z|^2 = x^2+y^2 That's why the curves are circles.
Wednesday, October 9, 2013 at 9:34pm by Steve

You're right, it is a W-shape, and in this case, it is more like a flattened parabola. The curve never touched the x-axis, so there are no real roots. In other words, all four roots are complex. Are you familiar with solving a quartic? and working with complex numbers?
Tuesday, September 8, 2009 at 10:22pm by MathMate

math complex numbers
oops, I forgot the 3i, so the answer is 4+i check that.
Wednesday, November 17, 2010 at 8:45pm by bobpursley

Math - complex numbers
Sorry, yes I meant from 0 to pi/2 for the last two questions.
Saturday, December 17, 2011 at 12:59am by Chiquesta

math-complex numbers
z = (-3,4) 3z = 3(-3,4) no such thing as 1/vector. However 1/z = (-3-4i)/5 |z| = 5 . . .
Friday, October 11, 2013 at 10:45am by Steve

You are given 2 real roots and one complex. As I noted before, complex numbers come in pairs, so there has to be another one, 1+2i so we have f(x) = (x+1)(x-2)(x-1-2i)(x-1+2i) multiply the last two brackets, the i's will drop out
Saturday, March 13, 2010 at 4:18pm by Reiny

Identify the structure used in each of the sentences below. 1. The hamburger came from Hamburg, Germany, and the hot dog came from Frankfurt. simple compound complex compound-complex 2. The idea of placing meat on a bun, however, came from the United States. simple compound ...
Friday, December 28, 2012 at 9:04am by Fate

Choose the term that describes the type of sentence shown. If you are in line early, you'll be sure to get the best tickets. A.) compound-complex B.) complex C.) compound D.) simple I think it is C? John was late to dinner and I was late to the movies. A.) simple B.) complex C...
Monday, December 16, 2013 at 5:07pm by Cassie

First, to simplify things, observe that arctan can be expressed as a logarithm in terms of complex numbers. Suppose we have two different roots (complex or real), y1 and y2. Then: ax^2 + bx + c = A(x-y1)(x-y2) for some contant A We have: 1/[(x-y1)(x-y2)] = p[1/(x-y1) - 1/(x-y2...
Thursday, January 10, 2008 at 2:41pm by Count Iblis

Michele's answer is not correct x^=-9 has no solution in the set of real numbers (x=-3 is a real number solution) You will have to use imaginary or complex numbers x^2 = -9 x = √-9 x = 3i where i = √-1
Monday, October 8, 2007 at 12:44pm by Reiny

algebra II
Odd question. a quadratic always has two solutions, real, or complex. The vertex can tell you if the solutions are real (sometimes a double solution, if the vertex is on the coordinate), or complex numbers.
Sunday, July 3, 2011 at 2:49pm by bobpursley

Algebra 2
If we restrict ourselves to positive integers, then subtraction does not have a closure property, for example: 5-7=-2 ∉ N. If we are dealing with real numbers, division does not have closure property, because we cannot divide by zero. On the other hand, non-zero real ...
Saturday, September 3, 2011 at 10:27am by MathMate

Use the quadratic formula to solve the equation. x - x = -2 Type an exact answer, using radicals as needed. Express complex numbers in terms of i. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.)
Sunday, April 24, 2011 at 10:07am by Mary

an equation to degree n, has n roots. This is always true, never violated. Never. Now, if the range of the variables are over the Real Number set only, then some of the roots cannot be written because they exclude the actual roots, complex numbers. Example(X^2+1)=0 x^2=-1 x...
Wednesday, February 23, 2011 at 2:33pm by bobpursley

2y=7sqrt(y)-3 2y+3 = √y square both sides 4y^2 + 12y + 9 = y 4y^2 + 11y + 9 = 0 y = (-11 √-23)/8 I am assuming you are dealing with real numbers only since y is a complex number, and we cannot take a square root of a complex number, your equation has no real ...
Friday, July 26, 2013 at 10:11pm by Reiny

Simplify the following quotient of complex numbers into the form a + bi. -8-8i/1+2i
Wednesday, March 2, 2011 at 9:07pm by Jackster

using only real numbers there is no factorization. Using complex numbers, 16x^2 + 49y^2 = (4x+7y i)(4x-7y i)
Tuesday, November 6, 2012 at 11:02pm by Steve

algebra2-imaginary numbers
You can add or subtract complex numbers by treating the i as a variable and combining like terms. I am having a lot of trouble figuring out these equations with imaginary numbers. 1. (3+2i)+(7-i)= 2.(1-6i)+(2-i)= 3. (2+i)-(3+i)= 4.(4+i)-(2-i)= Can someone please walk me ...
Tuesday, January 16, 2007 at 3:52pm by chrissy

Find the real and imaginary parts of the following complex numbers: (i) 1.5e^jπ/4 (ii) je^1.2 + j^2 e
Thursday, April 10, 2014 at 9:09am by Mat

Complex Number Proof
Prove: If Z and W are complex numbers, then the conjugate of (Z+W) is equal to the conjugate of Z plus the conjugate of W. My thought is that this is kind of like the distributive property, but I'm not sure. It doesn't help that I haven't written a proof in over 10 years. Help...
Wednesday, June 11, 2008 at 4:38pm by Amy

I Don't Know What Is This Subject Called In English But It's About Complex Numbers it says 25 = 16 - 9 i^2 = (4 3i) But My Teacher Says 25 = 25 - 0 i^2 = (5 0i) I Think My Teacher Is Wrong , The Result Is 25 But There Will Not Be Complex Number Because ( 0i = 0) So Is My ...
Wednesday, October 5, 2011 at 6:59am by Jack

The quadratic equation x2 + mx + q = 0, where m and q are real numbers, has the complex root a + bi. Which of the following must be equal to m?
Tuesday, October 1, 2013 at 1:10am by Anonymous

i is an imaginary number. YOu can graph it only on the complex number plane. Consider a rectangular graph, the x axis is the real numbers, and the y axis is imaginary numbers. THen you plot the point (-3,4). Find the distance from the origin, it is 5.
Tuesday, February 2, 2010 at 10:23am by bobpursley

Complex Numbers
You are welcome
Monday, January 31, 2011 at 9:03pm by helper

How to find moles given oxidation numbers and chemical formula? Trying to do my chemistry lab but i'm super duper stuck. please help me i'm gonna die. this is the part i'm stuck on: The overall charge on the complex, [Ni(en)(H2O)]^2+ * SO4^2- * H2O is zero; the charge on ...
Thursday, November 15, 2012 at 12:37am by dr bob's number one fan

Can someone please help me with these problems? Please and thank you. 1)Solve the equation: (1/x)+[x/(x+2)]=1 2)Simplify the complex fraction: 3-(3/4) ------- (1/2)-(1/4) (1/x)+ [x/(x+2)] = 1 Convert left side to the sum of fractional terms with common denominators. [(x+2) + x...
Sunday, May 13, 2007 at 11:28am by Lydia

Abstract Algebra
The elements of H are the complex numbers on the unit circle and if you multiply two of those you get another complex number on the unit circle, so the product of two elements of H is another element of H.
Friday, December 7, 2007 at 9:22am by Count Iblis

Calculus--complex numbers
Thursday, March 13, 2008 at 7:11am by Anne---?

complex numbers
Thank you so much!!!
Tuesday, November 4, 2008 at 1:43pm by Mary

complex numbers
Sunday, December 8, 2013 at 10:57pm by steve

Sketch the sets of complex numbers that would satisfy the following equation: |z| > 3 Explain in detail how the graph will look like. Thanks.
Friday, October 11, 2013 at 12:31am by Rinchan

My friend, area of complex figure is complex to find without given constraints. Ok, maybe you divide complex shape into familiar shapes. Example: complex figure is made from square and two triangles. Then is easy. So divide complex figure into little pieces of easy figures. ...
Thursday, March 7, 2013 at 5:26pm by sputnik

are these complex sentence. if it is complex, and are the subordinate clause right are these right? the subordinate clause are in capital letters 1-IN THE 1950S the giants were the national league team from new york.( COMPLEX) 2- fans argued all the time about WHO WAS THE ...
Wednesday, May 12, 2010 at 3:56pm by Sara!

english/check please
Find the independent clauses and the dependent clauses.Write wether it is complex or compound-complex 1)Mr and Mrs Johnson play golf(ind) when the weather is warm.(dep)complex 2)What I would like is a vacation. independent,complex 3)Alicia works at the daycare center that is ...
Monday, April 30, 2012 at 11:37pm by joe

math URGENT!!!!
i have a list of 5 different numbers. the sum of 2 of the numbers is 0. the sum of 2 of the numbers is 1. the sum of 2 of the numbers is 2. the sum of 2 of the numbers is 3. the sum of 2 of the numbers is 4.the sum of 2 of the numbers is 5.the sum of 2 of the numbers is 6. the...
Monday, October 29, 2012 at 5:14pm by dan

Write whether a sentence is simple, compound, complex, or compound-complex. 1-Mrs. Huang planned a party for Kim because she was graduating from high school. Complex 2=She invited Lisa,Elena,and Enrique to the party. Simple 3-Mr. Huang thought that kim's friends should come to...
Tuesday, May 1, 2012 at 9:28pm by joe

Calculus--complex numbers
thank you so much!!
Wednesday, March 12, 2008 at 4:09am by Anne

complex numbers
if 5i=yi, then y is 5 and if y is 5, x=y
Sunday, March 8, 2009 at 2:34pm by bobpursley

When you are looking at a work by Monet, stand back at least fifteen or twenty feet. simple, compound, complex, compound-complex complex
Wednesday, November 17, 2010 at 9:58pm by Hayley

math complex numbers
add like components: 3+8-7 -2i=4-2i
Wednesday, November 17, 2010 at 8:45pm by bobpursley

maths-complex numbers
by using the substitution w = z^3, find all the solutions to z^6 - 8z^3 +25 = 0 in complex numbers, and describe them in polar form, using @(theta) to denote the angle satisfying tan@ = 3/4 ( note simply leave @ as it is, dont calculate it). i got up to z^3 = 4+3i and 4-3i ...
Monday, March 12, 2007 at 9:25am by Anonymous

math complex numbers
3 + 3i + 8 − 2i − 7
Wednesday, November 17, 2010 at 8:45pm by dmj

There are 3 solutions with real numbers and 4 solutions with complex numbers
Monday, April 1, 2013 at 10:22am by Kim

Algebra 2/Trig.
I forgot some stuff from my 7th grade algebra class about complex what do you do with a problem like this 5+5i 3-i divided by + divided by 2-i 4+3i thanks.(divided by refers to dividing line in a fraction) In each case, RATIONALIZE the denominator. Here is the ...
Sunday, November 19, 2006 at 7:08pm by Tom

How i change 315 grad in 7xpi/4? I have on Thuesday a exam in math but i dont no how i can convert 135 grad in in this form(how the example above). I need it for complex Numbers
Saturday, May 19, 2012 at 12:42pm by Deny

-3x +1 = -8x^2 -4x 8x^2 + x +1 = 0 x = (1/16) [-1 +/- sqrt (-33)] The two answers are complex numbers.
Wednesday, March 18, 2009 at 11:10pm by drwls

6. President Eisenhower was a) A supporter of the military industrial complex b) The founder of the military industrial complex c) A general so he must be in favor of the military industrial complex d) Concerned that the military industrial complex would grow too big and ...
Sunday, September 16, 2012 at 7:38pm by Tammy

Algebra 2
When dealing with imaginary and complex numbers, are there 2 solutions? I.e.: x^2=4 x=2,-2 For: x^2=-4 x=2i or -2i ? (Is there a 2i and -2i, like for real numbers?)
Wednesday, October 24, 2012 at 1:00pm by Bart

i^6 = (i^2)^3 = (-1)^3 = -1 The square, not the square root of -1 is 1. :) B.t.w., can you prove that -1 times -1 is 1? Hint, try to prove first that for any number X: -1 times X equals -X How do you find the square root of -1? The square of any real number is alwayspositive. ...
Wednesday, November 15, 2006 at 3:37pm by Count Iblis

How do I find a complex prisoner number for f(z)=z^2+3? I have tried all the numbers but they all seem to be going up
Tuesday, August 16, 2011 at 11:19pm by Chanee

Natural numbers are the counting numbers, 1, 2, 3, etc Integers are the counting numbers, together with their opposites and zero. whole numbers are the counting numbers without the zero. Rational numbers are the set of all numbers that can be written as quotients, ie, 1/2. ...
Thursday, January 20, 2011 at 7:16pm by helper

complex numbers
find the values of x and y x+5i=y+yi
Sunday, March 8, 2009 at 2:34pm by Lou

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