1.  S1

3.  Both S1 and S2

4.  None of these.

1.  

2.  

3.  

4.  

1.  Even functions have only a constant and cosine terms in their FS expansion

2.  Odd functions have only sine terms in their FS expansion

3.  Function with half-wave symmetry contain only odd harmonics

1.  

2.  

4.  

2.  Only cosine terms

3.  Cosine terms and a constant term

4.  Sine terms and a constant term.

1.  All cosine terms

3.  Odd cosine terms

4.  Odd sine terms.

1.  

3.  

4.  

1.  

3.  4 s

4.  

1.  

3.  6A

4.  2A.

1.  f(t)=-f(-t)

3.  f(t)=1/f(-t)

4.  f(t) =-(t±T/2).