Show that 1+2+z+...+ 2n = and deduce that 1-n+1 1-z 1 + cos 0 + cos...

Transcribed Image Text:

Show that 1+2+z+...+ 2n = and deduce that 1-n+1 1-z 1 + cos 0 + cos 20 + + cos no - 1 2 for any complex number z except z = 1, sin[(n + 1)0] 2 sin (2) + 3 0 < 0 < 2T. Show that 1+2+z+...+ 2n = and deduce that 1-n+1 1-z 1 + cos 0 + cos 20 + + cos no - 1 2 for any complex number z except z = 1, sin[(n + 1)0] 2 sin (2) + 3 0 < 0 < 2T.

Answer rating: 100% (QA)

To show 1zz2zn 1zn11z for any complex z 1 Let s 1zz2zn Then sz zz... View the full answer