The minimal value of the function y = x4 – 4×3 + 16x is at / » Mathematical Tools for Economics 2 solved MCQs / By admin Question: The minimal value of the function y = x4 – 4×3 + 16x is at A. -1 B. 2 C. -2 D. 1 Answer» b. 2 Note: The above multiple-choice question is for all general and Competitive Exams in India.