Exercise $3\mathrm{.}2$

$($a$)$ Use the MATL $B$ colon operator $\text{'}$:$\text{'}($excluding the quotes$)$ to create a column range from $-5$ to $4.$ Further, any two consccutive elements of $x$ are uniformly sepe the MATLAB function length to find the number of elements $N$ stored in $x.$

$($b$)$ Exploit the MATLAB function linspace to generate a column vector $y$ which and the same number of elements $N$ as in $x.$

Caution: Entering the elements of $x$ and $y$ manually will receive NO credit.

$($c$)$ Apply the MATIAB logical operator $?-\text{'}($excluding the quotes$)$ to verify that y$.$ Explain.

Exercise $3\mathrm{.}3$

Create a $77$ matrix $M_7$ via using the MATLAB statement:

$M_7=$magic$(7)$

$($a$)$ Compute the row vector $r$ and the column vector $c$ whose elements are defined by and the rows of $M_7,$ respectively. Describe the unique characteristic of both $r$ and $c($b$)$ Use the MATIAB command eye$(7)$ to create the matrix $I_7.$ Then compare $I_7$ which is resulted from applying the MATL,AB command lip$(I_7).$ Deseribe their diff $($c$)$ Generate a $77$ matrix $A,$ which is characterized by the property that the sums sums of its rows are uniformly reduced by $2\mathrm{.}5$ element$-$wise compared with the eleme Part $($a$).$

Caution: Entering the elements of $c,r$ and A manually will receive NO credit.