engineering mathematics MCQ #5255

What is the amplitude of y = 3cos(2x)?

engineering mathematics MCQ #5255

  1. Question 1

    Q1. What is the amplitude of y = 3cos(2x)?

    • A) 3
    • B) 2
    • C) 1
    • D) 6

    Answer: 3

    Explanation: The amplitude of acos(bx) is |a|. Here, a = 3, so amplitude = 3.