Let f be a functi

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

f(x)=-1

f^-1(-1)=x

x³=-1

x³+1=0

(x+1)(x²-x+1)=0

x=-1,-w,-w²