Q. 105.0( 1 Vote )

Let f be a functi

Answer :

Formula:-


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


such that gof =Ix and fog = Iy .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


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