One to one functions
posted by Jessica on .
I still need help with finding the inverese of one to functions.
Find the inverese of the one to one function.
16. f(x)= 4/(5x-1)
This is what I've done so far.
Then I am not too sure what to do next.
The last line is wrong:
y=(x+4)/5x, doesnt match up with what I am suppose to get.
I am suppose to get:
a. f^-1(x)=4/(5y) +1/5, b. f^-1(x)=4/(5x) +1/(5), c. f^-1(x)= -1/(5) -4/(5x), or d. f^-1(x)=5x-1/(4)
y=(x+4)/5x= 1/5 +4/5x