中等MATH-TRIG-005
What is the period of y = sin(2x), with x in degrees?
A. 360°
B. 180°✓ 答案
C. 720°
D. 90°
解說
The period of sin(bx) is 360°/|b| = 180°. The graph of sin x has period 360°. Doubling the period is the wrong direction.
The period of sin(bx) is 360°/|b| = 180°. The graph of sin x has period 360°. Doubling the period is the wrong direction.