Exam 15: Matlab

Shown below are MATLAB inputs.Complete each output: \ggC=[1,3,-2,0] \ggD=3./C \ggD=

The following matrices have already been defined in MATLAB: $A = \left[ \begin{array} { c c c c } 2 & 4 & 10 & 13 \\16 & 3 & 7 & 18 \\8 & 4 & 9 & 25 \\3 & 12 & 15 & 17\end{array} \right] \quad B = \left[ \begin{array} { c c c c } - 1 & 3 & - 5 & 10 \\6 & 13 & 11 & - 5 \\- 3 & 12 & 0 & 2 \\2 & 12 & - 5 & 8\end{array} \right]$ What would be the outputs of the following MATLAB inputs: - $> > \mathrm { B } ( 2 : 5 )$

What is the MATLAB command for calculating the square root of a number? a. square_root b. sqrt c. sqr d. sq_rt

Which of the following commands are commonly used while plotting in MATLAB?

The following matrices have already been defined in MATLAB: $A = \left[ \begin{array} { c c c c } 2 & 4 & 10 & 13 \\16 & 3 & 7 & 18 \\8 & 4 & 9 & 25 \\3 & 12 & 15 & 17\end{array} \right] \quad B = \left[ \begin{array} { c c c c } - 1 & 3 & - 5 & 10 \\6 & 13 & 11 & - 5 \\- 3 & 12 & 0 & 2 \\2 & 12 & - 5 & 8\end{array} \right]$ What would be the outputs of the following MATLAB inputs: - $> > \min ( \mathrm { A } )$

Suppose you have defined x = [1,2,3] and y = [2,4,6] in the Command Window.Determine the result of the following MATLAB operation: $> > \mathbf { x } + \mathbf { y }$ a. ans = 3 6 9 b. ans= 1 2 3 2 4 6 c. ans= 6 12 d. ans= 18

The following matrices have already been defined in MATLAB: $A = \left[ \begin{array} { c c c c } 2 & 4 & 10 & 13 \\16 & 3 & 7 & 18 \\8 & 4 & 9 & 25 \\3 & 12 & 15 & 17\end{array} \right] \quad B = \left[ \begin{array} { c c c c } - 1 & 3 & - 5 & 10 \\6 & 13 & 11 & - 5 \\- 3 & 12 & 0 & 2 \\2 & 12 & - 5 & 8\end{array} \right]$ What would be the outputs of the following MATLAB inputs: - $\gg \mathrm { A } ( 4 : 8 )$

The following matrices have already been defined in MATLAB: $A = \left[ \begin{array} { c c c c } 2 & 4 & 10 & 13 \\16 & 3 & 7 & 18 \\8 & 4 & 9 & 25 \\3 & 12 & 15 & 17\end{array} \right] \quad B = \left[ \begin{array} { c c c c } - 1 & 3 & - 5 & 10 \\6 & 13 & 11 & - 5 \\- 3 & 12 & 0 & 2 \\2 & 12 & - 5 & 8\end{array} \right]$ What would be the outputs of the following MATLAB inputs: - $> \mathrm { A } ( 2 : 3 , : )$

an M-file is used to when you write a program that is more than a few lines long.

If you define $\mathrm { x } = 2 / 3$ , and then type $\mathbf { format~ long}$ , how will the value of $\mathbf { x }$ be displayed? a. $\mathrm { x } = 0.66666666666666666666667$ b. $\mathrm { x } = 0.66666666666667$ c. $\mathrm { x } = 0.67000000000000$ d. $\mathrm { x } = 2 / 3$

If you define $\mathbf {x = 2 / 3}$ , and then type $\mathbf { format~ rat}$ , how will the value of $\mathbf { x }$ be displayed? a. $x = 0.66666666667$ b. $x = 0.6667$ c. $x = 0.67$ d. $x = 2 / 3$

The following matrices have already been defined in MATLAB: $A = \left[ \begin{array} { c c c c } 2 & 4 & 10 & 13 \\16 & 3 & 7 & 18 \\8 & 4 & 9 & 25 \\3 & 12 & 15 & 17\end{array} \right] \quad B = \left[ \begin{array} { c c c c } - 1 & 3 & - 5 & 10 \\6 & 13 & 11 & - 5 \\- 3 & 12 & 0 & 2 \\2 & 12 & - 5 & 8\end{array} \right]$ What would be the outputs of the following MATLAB inputs: - $> > \text { length } ( \mathrm { A } )$

The following matrices have already been defined in MATLAB: $A = \left[ \begin{array} { c c c c } 2 & 4 & 10 & 13 \\16 & 3 & 7 & 18 \\8 & 4 & 9 & 25 \\3 & 12 & 15 & 17\end{array} \right] \quad B = \left[ \begin{array} { c c c c } - 1 & 3 & - 5 & 10 \\6 & 13 & 11 & - 5 \\- 3 & 12 & 0 & 2 \\2 & 12 & - 5 & 8\end{array} \right]$ What would be the outputs of the following MATLAB inputs: - $> > \max ( \mathrm { B } )$

Suppose you have defined $x = [ 1,2,3 ] \text { and } y = [ 2,4,6 ]$ in the Command Window.Determine the result of the following MATLAB operation: $> > x \cdot { } ^ { * } y$ a. ans= 3 6 9 b. ans= 2 8 18 b. ans= 1 2 3 4 5 6 c. ans= 6 12

The part of the screen where you enter variables and issue MATLAB commands is known as the

Find the corresponding MATLAB output: $\gg$ factorial $( 3 )$ $\text { ans } =$

What is the MATLAB command for calculating standard deviation? a. standard b. stddev c. std_dev d. std

To generate the set of x even numbers in the range of two to ten, what should you enter in the Command Window? a. $x = 2 ; 2 ; 10$ b. $x = 2 : 2 : 10$ c. $x = 2 : 10 : 2$ $\mathrm { d } , { x } = { 2 , 1 0 , 2 }$

You can transfer old commands from the Command History Window to the Command Window.

To clear the contents of the Command Window, type