Plot the following functions as shown in figure $1\mathrm{.}1$ in the book. Match the figures as

closely as you can. $($a$)f(x)=e^{-\frac{x}{4}}sin(x),($b$)f(x)=e^{-\frac{x}{4}}sin(x),$ but show the function

$e^{-\frac{x}{4}}$ as a dotted line in addition to $f(x),($c$)f(x)=e^{-x}si{n}^2(x),$ d$)$ a polar graph with

with six "flower petals"$\mathrm{.}1\mathrm{.}2.$ BASIC ELEMENTS OF MATLAB

a$)$

b

d$)$

Figure $1\mathrm{.}1$: Samples of MATLAB plotting.

nat is$,$ the directory where your files are located. MATLAB searches for M$-$files

all locations specified in a list called the "path." Use the path command or

le "Set path..." menu item to add your directories to MATLAB's path.

After MATLAB executes the commands in the M$-$file, it returns control to

command line. You can then enter individual commands $($for example, to

splay the values of your variables$).$ The interactive help may be used from

command line. For example,