For a continuous periodic even function which statement is c

For a continuous periodic even function, which statement is correct? Coefficients a_n and b_n are nonzero only for n = 2, 4, 6, 8... Coefficients a_n and b_n are nonzero only for n = 1, 3, 5, 7... Coefficients for sine terms are all zero Coefficients for cosine terms are all zero

Solution

For a continuos periodic even function,

c) coefficients for sin terms are all zero

that is bn= 0 in above equation when function is even.