The Question -

Sketch  H(t - \pi/4) - H(t)

My Attempt -

I thought the function was in the form of a pulse function  H(t - a) - H(t - b)

Whereby

<br />
f(t)=\left\{<br />
\begin{array}{l l l}   <br />
      0, & t<a\\<br />
      1, & a \leq t < b\\<br />
      0, & t \geq  b<br />
\end{array}\right.<br />

But these conditions would not create a step.... Or would they?

If you know where I've gone wrong or can explain what's going on to me that would be great.

Thanks