% 7.4; convolution, s-derivative theorem, s-integral theorem
 % 7.5; unit step, pulse, ramp, second shift theorem, spring-mass, circuits, periodic function theorem
 % 7.6; Dirac impulse, hammer hit model, unit impulse response, unit step response
\begin{alltt}
 HW 7, Due Week 8
\BF{7.4}: \bx{2}, 3, 9, 13, 15, 17, \bx{22}, 23, 26, 27, 29, 30, \bx{36}, 37
\BF{7.5}: 3, \bx{4}, 7, 9, 11, 13, \bx{14}, 21, \bx{22}, 25, 27, \bx{28}, 31, 33, 34, 37
\end{alltt}