MHT CET202312 May 2023Evening ShiftMathematicsFunctionsActual

If f (x)=x^2+1 and g (x)= 1 x , then the value of f ( g ( g ( f (x)))) at x=1 is

Options

Correct answer

C. 5

Step-by-step solution

aligned f (x)=x^2+1, & ~g (x)= 1 x f ( g ( g ( f (x)))) & = f ( g ( g (x^2+1 ) ) ) & = f ( g ( 1 x^2+1 ) ) & = f (x^2+1 ) & = (x^2+1 )^2+1 aligned At x=1 , we get the value of above function aligned & = [(1)^2+1 ]^2+1 & =5 aligned

Practice Functions on Quantrex Academy →

More from Functions

If f : R A , defined by f ( x )= x + 3 x -1 , is an onto function then A = 2025 Let g(x)=1+x-[x] and f(x)= cases -1, & x 0 cases ([x] ) denotes the greatest integer less than or equal to (x ). Then for all x , f ( g ( x ))= 2025 The domain of the real valued function f(x)= 3 4-x^2 + ₁₀ (x^3-x ) is 2025 A real valued function f: A B defined by f(x)= 4-x^2 4+x^2 x A is a bijection. If -4 A then A B= 2025 Let [ x ] represent the greatest integer less than or equal to x , x = x -[ x ] , 2 =1.414 and 3 =1.732 . If f(x)= x+ [ x 1+x^2 ] is a real valued function, then f ( 2 )+ f (- 3 )= 2025 If the range of the function f(x)=-3 x-3 is 3,-6,-9,-18 , then which one of the following is not in the domain of f ? 2025 The domain of the function f(x)= _e ( 1 x^2-4 x+4 ) + ⁻¹ (x^2-2 ) is 2025 Consider the following statements Statement-I : A function f : A B is said to be one-one if and only if f(x) f(y) x y Statement-II : A relation f: A B is said to be a function if x 2025 Full Functions list All MHT CET PYQs