Q$3$:

$x(t)=0\mathrm{.}5+\frac{2}{}[cos(t)+\frac{1}{3}cos(3t)+\frac{1}{5}cos(5t)+\frac{1}{7}cos(7t)+$cdots$]$

Use a for or while loop. Use $n$ as the loop

parameter to add certain terms then plot the

result versus time $-10t10$

On one figure, draw the result of $3$ terms.

On one figure, draw the result of $10$ terms.

On one figure, draw the result of $100$ terms.