Thecarl69

4 Questions
0 Answers

0

978

1

+16

Help

Let r1, r2, r3 and r4 be the roots of x^4 - 2x^3 - 5x^2 + 4x - 1 = 0
Find the monic polynomial , in x, whose roots are 1/r1, 1/r2, 1/r3 and 1/r4

Thecarl69 Mar 15, 2020

0

937

2

+16

Find the quotient when $x^9 + 1$ is divided by $x - 1.$

Find the quotient when $x^9 + 1$ is divided by $x - 1.$
I keep on getting a remainder of 2, can somebody help me?

Thecarl69 Feb 2, 2020

0

707

1

+16

Prove that if $w,z$ are complex numbers such that $|w|=|z|=1$ and $wz\ne -1$, then $\frac{w+z}{1+wz}$ is a real number.

Prove that if are complex numbers such that and , then is a real number.

Thecarl69 Jan 5, 2020

0

680

1

+16

Prove that if $w,z$ are complex numbers such that $|w|=|z|=1$ and $wz\ne -1$, then $\frac{w+z}{1+wz}$ is a real number.

Prove that if are complex numbers such that and , then is a real number.

Thecarl69 Dec 25, 2019