4. Write a Scilab program, such that create the following polynomial:
$p(s) = s^2(s^2 - 1)(s^2 - 2)$
a. Using the Scilab software plot the function versus s from -1.5 to 1.5 with 1000 samples.
b. Find the x-intercepts of the polynomial $p(s)$ and display them on the console.
c. Plot the x-intercepts on the same graph of part a. with red "x".
d. Find the minimum, maximum, variance and standard deviation of the polynomial $p(s)$ for the given
range and display the following messages:
"The minimum of $p(s)$ with 4-digit decimal precision is ____"
"The maximum of $p(s)$ with 4-digit decimal precision is ____"
"The variance of $p(s)$ with 4-digit decimal precision is ____"
"The standard deviation of $p(s)$ with 4-digit decimal precision is ____"
e. Add title, x-label, y-label, legend. Linewidth = 5.
