📐 Mathematics · Relations and Functions · JEE

If fog(x) = f(g(x)) where f(x) = x + 1 and g(x) = 2x, then fog(3) =

Answer: 7.

Correct answer: D. 7

Explanation: g(3) = 6. f(g(3)) = f(6) = 6 + 1 = 7.

Concept context

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