Problem $3(20$ pts$)$

$$ please give me a solution on a paper

Reactant $F$ is converted in a CSTR using a first order reaction. The reactor is running at constant volume flow rate and assumed to be isothermal. Find the transient response for operation of the CSTR undergoing the following change:

A$)$ Sketch the CSTR with all inputs and outputs $(4$ pts$)$

B$)$ Find the transient response for operation of the CSTR undergoing a temporary step function where $F$ changes from CF$0$ to $1\mathrm{.}3C_{F0}$ at $t=0$ until $t={}_1$ then goes back to $C_{FO}$ again as follows: $(20$ pts$)$

$CN(t)=\{\begin{array}{cc}{C}_{FO},& t0\\ 1\mathrm{.}3C_{F0},& 01\end{array}$

$($Please check the function CN$($t$)$ from photo $)$