9 Find the inverse of the function t2 Solutionfxy x22x21 Swi
9. Find the inverse of the function t+2
Solution
f(x)=y= (x2+2)/(x2-1)
Switching x and y
x=(y2+2)/(y2-1)
xy2-x=y2+2
y2=(2+x)/(x-1)
y= sqrt((2+x)/(x-1)) or y=-sqrt((2+x)/(x-1))
f-1(x)= sqrt((2+x)/(x-1)) or f-1(x)=- sqrt((2+x)/(x-1))
