Question $5$:

Plot the signal $x(t)=\frac{t}{1+t^4}$

Then, sketch the function and express the function mathematically for the following

a$.x(1\mathrm{.}5t)$

b$.x(0\mathrm{.}8t)$

c$.x(-t)$

d$.x(t+3\mathrm{.}6)$