How do you find the inverse of #f(x)=4^x# and is it a function?

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Answer 1 · 2016-05-02T16:06:43

#f^-1(x)=log_4 x#---> is a function.

#y=4^x#

#x=4^y#---> Switch x and y

#logx=log 4^y#

#log x =y log 4#

#y=log x/log4#

#y=log_4 x#--> Inverse

#f^-1(x)=log_4 x#