Question $2$

Let $x=$ linspace$(-12,15,60$;

If $y=x^4+8x^3+2x^2-80x-75$

Using

$($i$).$ a for loop $($looping procedure$),$ generate the $y$ vector for all values of $x$ and plot $(x,y)$

$($ii$).$ array operation $($vectorization$),$ find $y$ for all values of $x.$ Plot $(x,y)$ on a new figure.

Remember the title and axis labels. Do not upload the figures.

Hint: use polyval for full credit.