215 Answered Questions for the topic Complex Numbers

Complex Numbers Math Precalculus

9d

find two complex numbers who have a sum of 14 and a product of 74.

isn't it 7+i and 7-i? i am so confused...
Complex Numbers Math

10d

What are the four roots of -\frac{1}{2}+\frac{1}{2}\sqrt{3}i

Hei! I'm not entirely sure how to solve this. I need to find all 4 roots in exponential form. So far I've written the complex number in exponential form. e^{\frac{2\pi}{3}}
Complex Numbers Differential Equations

28d

How to convert complex numbers to polar form.

z=4e^(i1.7)Write the following numbers in polar form reiθ, 0≤θ<2π:a) z¯r=θ=b) 1/zr=θ=So, I have r for both of these (4 and .25). I need the angles. I thought b) would be -1.7, but that was... more

06/27/21

List all of the fourth roots of 9/2((sqrt3)-i) from least to greatest in order of principal values

(cos + i sin ) (cos + i sin ) (cos + i sin ) (cos + i sin )
Complex Numbers Precalculus

05/13/21

How do you find all 6th roots of 64+0i (in both trig and standard form)?

Complex Numbers Trigonometry

03/26/21

(NEEDED ASAP) If z = 2 + 10i then calculate 4Re(z) + 6lm(z)

4Re(z) + 6lm(z) =
Complex Numbers Trigonometry

03/26/21

(NEEDED ASAP) If z = 2 + i then find lm(z).

lm(z) =
Complex Numbers Algebra 2

03/21/21

Complex Numbers

Find the product of the two numbers, (7+2i) and (3+5i). Plot this point on your graph and find the magnitude and direction of the product. a. What relationship do you notice between the magnitude... more
Complex Numbers Calculus

02/09/21

Evalaute contour integral

Evaluate the contour integral [(z+3)/(z)(z-1)^2 (z-2)]dz where c is the circle |z|=5/2 by using the residue theorem.What would be the final answer?
Complex Numbers Algebra

02/06/21

factor .. . .. . . .

Factor: 8a^2+16b^2...............
Complex Numbers Algebra 2

02/06/21

Find the solutions of the equation, and find the sum and the product of the roots:

Find the solutions of the equation, and find the sum and the product of the roots: 4x^2-12x+15=0
Complex Numbers Algebra 2

02/06/21

How many terms of the series 25+19+13 +… are required to make the sum −20?

How many terms of the series 25+19+13 +… are required to make the sum −20?
Complex Numbers Algebra 2

02/06/21

How many terms of the series 25+19+13 +… are required to make the sum −20?

How many terms of the series 25+19+13 +… are required to make the sum −20?
Complex Numbers Algebra 2

02/06/21

How many terms of the series 25+19+13 +… are required to make the sum −20?

How many terms of the series 25+19+13 +… are required to make the sum −20?
Complex Numbers Algebra 2

02/06/21

How many terms of the series 25+19+13 +… are required to make the sum −20?

How many terms of the series 25+19+13 +… are required to make the sum −20?
Complex Numbers Calculus

01/24/21

Question related to Complex Analysis

z^6 - 2z^3 - 8 = 0 using Polar Form and De Moivre theorem
Complex Numbers Precalculus

01/05/21

Find all the zeros of f(x)=x3−6x2+25x−68 given that 1−4i is a zero.

Complex Numbers Math Algebra 1 Algebra 2

12/29/20

How would you solve this equation? Thanks for your help. Greatly Appreciated.

12x2-18 = -150
Complex Numbers Trigonometry Algebra

11/12/20

What are the three cube roots of -8i? i = √-1

Complex Numbers Linear Algebra

10/23/20

determine the complex solutions of the equation

(z+4)3 = -8i
Complex Numbers Linear Algebra

10/23/20

determine the complex solutions of the equation

(z+4)3 = -8i
Complex Numbers Math Polar Expression

10/08/20

Find the polar expression of i and -1

the title is everything, the question is Find the polar expression of i and -1
Complex Numbers Algebra 2

10/08/20

Algebra Question

Simplify, leaving answer in polar form.cos(5A) - i sin(5A) / i sin(B) + cos(B)(division)

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