Please write code in matlab!

Problem $1$: Use the linspace function to create vectors identical to the following created with colon

notation:

a$)t=-2$:$5$:$13$

b$)x=20$:$-3$:$8$

Problem $2$: Use colon notation to create vectors identical to the following created with linspace:

a$)v=$ linspace $(0,10,3)$

b$)r=$ linspace $(10,0,4)$

Problem $3$: The following line is entered in MATLAB:

$>A=[-7-89$;$9$:$-3\mathrm{.}5$:$2$;$1$ inspace $(-9,0,3)]$

a$)$ Write out the resulting matrix.

b$)$ Use colon notation to write a single$-$line MATLAB command to multiply the

first row by the third column; i$.$e$.,$ use colon notation to call the entire first row

and the entire third column.

Please write code in matlab!