Question

If f(x) = 1 + nx + \(\frac{n(n-1)}{2}x^2+\frac{n(n-1)(n-2)}{6}x^3+...+x^n\) then f"(1) =

• A. n(n - 1) 2ⁿ
• B. (n - 1) 2^n-1
• C. 2^n-1
• D. n(n - 1)2^n-2

Answer 1

The Correct Option is D

The correct answer is (D) : n(n - 1)2^n-2.