Hello there, my professor gave out a practice question in prep for the exam. The posted question:

Compute the Fourier series for f(t) = ( 1 on [-pi/2,pi/2] ) or ( 0 for t>pi/2), on [-pi,pi].

I think my problem may stem in the professor incorrectly posting the question, since t is not defined for a portion of this. I am not sure on the period because of this.

Any help for this immediate, and future problems i may encounter for this question is much apprecated