$1\mathrm{.}4$ Matlab Help

Matlab has good help facility. The help function knows about all the commands listed in this tutorial. Typing help function tells you the syntax for the function, i$.$e$.$ what arguments it expects. It will also give you a short description of what the command does. If you think you are doing something right, but Matlab claims you are in error, try looking at the help for the functions you are using.

Exercise $1\mathrm{.}2$: Use the Matlab help to find some information about the eps variable.

Exercise $1\mathrm{.}3$: Use the Matlab help to find some information about the sqrt function.

Exercise $1\mathrm{.}4$: Use the Matlab help to find some information about the Matlab commands: clear, close, clc$,$ who and whos.

Exercise $1\mathrm{.}5$: Write a Matlab instruction to calculate the value of $\sqrt[\phantom{2}]{2}.$