D.C. component of the waveform shown below is

Here equation of f (t) = mt + 4

f (t) =		–	1	t + 4
			2

where, m = slope of the given waveform

Now, D.C. component =	1			f(t) dt
	T		_T

=	1		²	– (t/2) + 4 dt
	2		₀

=	1			–t²	+ 4t		²
	2			4			₀

=	1			–4	+ 4 × 2
	2			4

= 3.5 V