YamiletRdz3769 YamiletRdz3769 27-02-2024 Mathematics contestada Determine whether or not each of the following signals is periodic. If the signal isperiodic, determine its fundamental period.a. x(t)=[cos(9πt+1)]2b. x(t)-2e-sin(10πt)c. x(t)=ed. x[n]-cos( 국 )e. x(t)=cos(5t+2)+cos(9t-2)