217 Answered Questions for the topic Complex Numbers

Complex Numbers Trigonometry

03/19/17

I need Trignometry help ASAP PLEASE
I need help with these trigonometry problems. I would really appreciate it if you could help me. Here is the problem: Problem #3 – Show that |r(cosθ + isinθ )| = r. Second Question: – Find the... more
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02/27/17

Complex number doubt
The continued product of the four values of (cos π/3  + isin π/3)3/4 =  1. 1 2. 1-i√3 3. 1+i√3 4. None of these
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Complex Numbers

02/07/17

log((x+iy)/log(x-iy)=2i tan inverse y/x
prove that log((x+iy)/log(x-iy)=2i tan inverse y/x
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Complex Numbers

01/28/17

for any point, z, whose size is one, find the length of z^2
for any point, z, whose size is one, find the length of z^2
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Complex Numbers

01/23/17

if |z + 1/z| = a then min and max of |z| are where | | is modulus of complex number
based on prop of modulus not knowing how to solve
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01/16/17

What is the relation between the set of complex numbers, the imaginary numbers, and the real numbers?
 What is the relation between the set of complex numbers, the imaginary numbers, and the real numbers? 
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Complex Numbers Absolute Value Number Theory

01/13/17

Why does the absolute value of every real positive number raised to i equal 1?
Why does the absolute value of every real positive number raised to i equal 1?
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Complex Numbers Math Precalculus Polar Forms

12/17/16

Rewrite the complex number in polar form
Rewrite the complex number in polar form, z=r(cos(theta)+isin(theta)).z = 2 = ?   A. 2(cos(0)+isin(0)) B. 2(cos(pi/4)+isin(pi/4)) C. (sqrt 2)(cos(0)+isin(0)) D. (sqrt 2)(pi/4)+isin(pi/4))
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12/14/16

Find the quotient of the complex numbers.
Find the quotient of the complex numbers:   2 * (sqrt 3) (cos (116 deg) + i sin (116 deg)) / 2(cos (82 deg) + isin (82 deg ))
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12/14/16

rewrite the complex number in polar form.
rewrite the complex number in polar form, z=r(cos(theta )+isin(theta )) z= (1/2)+(sqrt 3/2)i=?    A. cos(pi/2)+isin(pi/2) B. cos(pi/3)+isin(pi/3) C. cos(pi/4)+isin(pi/4) D. cos(pi/6)+isin(pi/6)
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12/13/16

Rewrite the complex number in rectangular form, a + bi.
Rewrite the complex number in rectangular form, a + bi. z=(sqrt 2)cis(105 deg)=?   
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Complex Numbers Math Calculus Precalculus

12/12/16

Rewrite the complex number in rectangular form, a + bi.
Rewrite the complex number in rectangular form, a + bi.   z=7cis(pi/6)=?   A. 7+7i B. ((7(sqrt 3))/2)+(7/2)i c. (sqrt 3/2)+(1/2)i D. (7/2)+(7/2)i
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Complex Numbers Math Precalculus Math Help

12/07/16

Find the quotient of the complex numbers
Find the quotient of the complex numbers:    2*(sqrt 3)(cos(116 deg)+isin(116 deg))/2(cos(82 deg)+isin(82 deg))
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Complex Numbers Algebra 2

12/05/16

Complex Numbers
Find each expression for u=2i-5j and v=-3-2j, find   (a) 2u-3v    (b) ll2u-3vll   the two "ll" on both sides of the formula for "b" are signs and not numbers or letters.   Please show step... more
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Complex Numbers

12/04/16

Find the product of (3-2i).(5+7i), where i raise to power 2 is -1
It is a troubling question which has proved a real bulwark to attempt or even solve correctly.
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Complex Numbers

11/18/16

x and y are the real and imaginary parts, respectively, of a complex number
x and y are the real and imaginary parts, respectively, of a complex number ,find the value of x and y : (y/1+i) = (x 2+2)/(x+√-2)  
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Complex Numbers Real Numbers

11/04/16

Determine all possible combinations of real and complex numbers that the polynomial function has and explain how you know
the function is ax^5-bx^2+cx-d what got me confused is that there are letters not numbers.
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Complex Numbers Algebra 2 Word Problem Roots

10/04/16

Problem solving- Complex Numbers and Roots
At a carnival, A new attraction allows contestants to jump off a springboard onto a platform to be launched vertically into the air.  The object is to ring a bell located 20 feet overhead.  The... more
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Complex Numbers Word Problems Alegbra 2

10/04/16

Complex Numbers and Roots- i Term
(Find the value of X and Y that make each equation true)   1. 2x-20i=8-(4y)i 2. 5i-6x=(10y)i+2   (Find each Complex Conjugate)  3. i-3 4. 3i-4 5. 11i   6. The impedance of an electrical... more
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Complex Numbers Math Computer Science Algorithm

09/28/16

polar coordinates
Write in polar coordinates all 8-th roots of unity. Find all pairs of roots r1 and r2 such that r1 = r2
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Complex Numbers

09/14/16

Find the equation whose roots are the n-th powers of the equation x2-2x+4.
Please solve this.
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Complex Numbers

09/12/16

solve the equation|z|=z+1+2i
|z|=z+1+2i  
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06/29/16

Find x and y in complex numbers
(x+yi)4=-7-24I Find x and y  In complex numbers
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Complex Numbers

06/27/16

complex roots
if Z1 , Z2 , Z3, Z4 are roots of equation z4 + z3 + z2 + z + 1 = 0   then what is the sum of all the fourth and fifth power of roots ?
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Complex Numbers Geometry

06/23/16

complex number geometry
Give any two complex numbers lie along the angle bisector of the lineL1 : z= (1+ 3r) + i(1+4r)L2 : z =(1+3s) + i(1-4s)find any two points on the angle bisector
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