Question

The period of | sin (3x) | is 
A. 2 π 
B. 2 π / 3 
C. π / 3 
D. 3 π​

Answer 1

Answer:

Draw graph of sin3x and apply the modulus function to the graph of sin3x. We would obtain repetitions of positive values after a fixed interval of π/3. So the period of | sin3x | is π/3.

So the correct answer is option is C: π/3