If f(x) = `x^3` , then find `f^(-1 )( 8 )`

Let f:DtoR , where D is the domain of f . Find the inverse of f if it exists: Let f:[0,3]to[1,13] is defined by f(x)=x^(2)+x+1 , then find f^(-1)(x) .

If f(x)=7x-8, then f'(3)=

If is a real valued function defined by f(x)=x^(2)+4x+3, then find f'(1) and f'(3)

If f(x ) = x^3 - 1/x^3 , then find the value of f(x) + f( 1/x )

If the function f: R->R be defined by f(x)=x^2+5x+9 , find f^(-1)(8) and f^(-1)(9) .

If f(x)=(x-1)/(x+1), then find f{f(x)}

If the function f: C->C be defined by f(x)=x^2-1 , find f^(-1)(-5) and f^(-1)(8) .

If f(x)= 2 sinx -3x^(4)+8 , then find f'(x) is