Question

find inverse: f(x)= (1/2)^x

Answer 1

@hartnn @UnkleRhaukus

this is what i have:
x=2^-y but i don't know how i'll solve for y.

Answer 2

take log on both sides

Answer 3

ok, i'll work out on paper and give answer

Answer 4

i got y= logx/-0,301

Answer 5

it can be simplified as
y= \(-\log_2x\)
know how ?

Answer 6

yes wait: logx= -ylog2
logx/-log2= y
y= −log2x because of the formula/rule logax= logx/loga and i know the proof thx!

Answer 7

right,
welcome ^_^