$1.$Write a MATLAB script to do the following. Load the data set $hv1lpl$ data.txt which is

given to you with the assignment. From this data set strip off the three columns of data

and store them in arrays time, hField, and magnetization $($time is column $1,$ etc.$)$ Then,

create three separate plots. The first being hfield versus time. Label the $x-$axis as

'seconds' and the y$-$axis as $\text{'}$A$/$m$\text{'}.$ Include the title: $\text{'}$H$-$field versus time'. The curve in

the plot should be a red line with linewidth $2.$

For the second plot, plot magnetization versus time. Label the $x-$axis as 'seconds' and the

$y-$axis as $\text{'}$A$/$m$\text{'}.$ Include the title: 'Magetization versus time'. The curve should be a

green dot$-$dashed line with square markers and a linewidth of $2.$ Set the markersize to $10$

and the marker color to be blue.

For the third plot, plot magnetization versus hfield. Label the $x-$axis as $\text{'}H(\frac{A}{m})\text{'}$ and the

$y-$axis as $\text{'}M(\frac{A}{m})\text{'}.$ Include the title: 'Magetization versus $H-$field'. The curve should

be a solid blue line with a linewidth of $2.$

For all three plots, set the FontSize $=14.$

$2.$Write a MATLAB script to do the following. Create a sequence of uniformly spaced

numbers ranging from $-3$ to $2,$ that is of length $201.$ Name this sequence $x.$ Then, using

array operations, compute the array that represents the equation

$y=1-2x-\frac{1}{2}{x}^2+\frac{2}{3}{x}^3+\frac{1}{4}{x}^4.$ Plot the result of $y$ versus $x$ using a blue, dot$-$dash line

with a linewidth $=2.$