A signal x(t) is given by Which among the following gives

A signal x(t) is given by

Which among the following gives the fundamental Fourier term of x(t)?

By property of symmetry of Fourier term of x (t).

4	cos		πt	-	π
π			T		4

4	cos		πt	+	π
π			2T		4

4	sin		πt	-	π
π			T		4

4	sin		πt	+	π
π			2T		4