Identify the beginning of a sample period for the function: : f(t)=2csc(t+pi/4)-1

ANSWER



EXPLANATION

The given function is,



This function has a period of

just as the parent function



A sample period of this parent function is



Which begins at zero.

For the transformed function,


There has been a horizontal shift of

to the left.

The transformed function will have a sample period,



Therefore a sample period begins at