Question

Which of the following is a sinusoid?

A. y = |x|
B. y = 2x
C. y^2 + x^2 = 9
D. y = 2sin x

Answer 1

The correct answer among the choices presented above is option S. The equation y = 2sinx is a sinusoid. A sinusoid is a curve having the form of a sine wave and since the equation contains the sine function then it must be the answer.