Saratbindu

2 Questions
0 Answers

0

301

0

+8

System of equations

3(a-5x)<1+x
2-x/2>3+5(x-a)

Saratbindu Sep 15, 2021

0

475

2

+8

Algebra, complex numbers

The complex number z and w satisfy |z | =|w| =1 and zw is not equal to-1.
a) prove that conjugate z= 1/z and conjugate w =1/w,
b) prove that z+w/zw+1 is a real number

Saratbindu Sep 15, 2021