Ohhhh so you had to use the half-angle identity equation-- thank you so much haha!! I'll try and attempt the question again knowing the formula... thank you so much once again!! Also I understood the concepts on the 2nd and 3rd question on where I went wrong and how to do the question it self. this is really helpful!!
I'm so dearly sorry !! I just read the guidelines saying one question per post.. I won't repeat the same mistake next time-- though could I seek help on these just this once?? I'm so confused
ya sure my algebra went like this:
|f(z)-z|=|f(z)-0|
|wz-z|=|wz|
factor
|w-1||z|=|w||z|
|w-1|=|w|
(a-1)^2+b^2=a^2+b^2
-2a+1=0
a=1/2
and then i think i plugged it in
are those steps above right?
bcs if so I messed up on the plugging it in part
