📐 Mathematics · Relations and Functions · JEE

If f(x) = 2x + 3 and g(x) = x², then the composite (f ∘ g)(x) = f(g(x)) equals:

Answer: 2x² + 3.

Correct answer: A. 2x² + 3

Explanation: f(g(x)) = f(x²) = 2(x²) + 3 = 2x² + 3.

Concept context

Ordered pairs, Cartesian products, types of relations and functions, domain and range. Foundation for calculus and Class 12 algebra.