If f :R → R is defined by f(x) = x 2 , f –1 (–25).

Question

Philoid · Accepted Answer

Formula:-

(i)A function f : X → Y is defined to be invertible, if there exists a function g : Y → X

such that gof =I_x and fog = I_y .The function g is called the inverse of f and is denoted by f^-1

f(x)=y

f^-1(y)=x

x²=-25

but x should be Real number