JEE Main 2023 Mathematics question
Consider a function f : N R, satisfying f(1) + 2f(2) + 3f(3) + …. + xf(x) = x(x +1)f(x) ; x2 with f(1) = 1. Then is equal to
Answer: (C)
Consider a function f : N R, satisfying f(1) + 2f(2) + 3f(3) + …. + xf(x) = x(x +1)f(x) ; x2 with f(1) = 1. Then is equal to