engineering mathematics MCQ #735

If y = tan(x), then d²y/dx² = ?

engineering mathematics MCQ #735

  1. Question 1

    Q1. If y = tan(x), then d²y/dx² = ?

    • A) 2sec²(x)tan(x)
    • B) sec²(x)
    • C) -sec²(x)
    • D) 2sec(x)tan(x)

    Answer: 2sec²(x)tan(x)

    Explanation: First derivative of tan(x) is sec²(x). Second derivative is derivative of sec²(x), which involves the chain rule and is 2sec²(x)tan(x).