P$1\mathrm{.}2$ Design a circuit, for construction in the lab, to the following specifications:

a$)$ Integrator output: $+-2V.$

b$)$ Comparator output: $+-10V.$

c$)$ Frequency: $100Hz$

All resistor values should be $10k.$

P$1\mathrm{.}3$ Which resistor can be used as a frequency control without affecting the triangle wave amplitude? What value would give a frequency of $500Hz?$

P$1\mathrm{.}4$ Can the triangular wave amplitude be adjusted independently of frequency by changing only one resistor? If so$,$ which one? If not, what approach would you suggest to realize this capability? $($Hint: in the lab we will be using a "quad op$-$amp": $4$ op$-$amps in one package$).$