find the inverse of f(x)= 17/x
f(x)=17/x
x=17/f(x)
1/f(x)=x/17
f-1(x)=f(x)
f(x) = 17/x
Write this as
y = 17/x multiply both sides by x and divide both sides by y
x = 17/y "exchange" x and y
y = 17/x for y, write f-1(x)
f-1(x) = 17/ x thus, amazingly..........this function is also its own inverse !!!
