Question

14. Practice questions

a. Create an anonymous function called func1 for the dummy argument x that finds the exponential of the negative one-half times the argument, and multiplies it by the sine of five times the argument. If given a vector or matrix, the function should perform element-by-element processing.

b. Using plot(), plot plotr -vs- func1(plotr) as a blue line. Then plot this same function again over the same range (0, 5) as a dashed red line using fplot(), keeping the original blue line. Label the x-axis "Plot Range", the y-axis "Function 1". Print the figure to a PDF called "Figure1.pdf". Please proof your answer on MATLAB

c.  indicate which of the names below are valid and appropriate variable names.

• time-history

• ALL&FILES

• Velocity_6

• DocList

• exp

• sys470_0

• 68_degrees

• @computers_list

Answer 1

func1=@(x)exp(-x/2).*sin(5*x);
plotr=linspace(0,5,100);%replace this with your plotr vector
plot(plotr,func1(plotr),'b')
hold on
fplot(func1,[0,5],'r--')
xlabel('Plot Range')
ylabel('Function 1')
saveas(gcf,'Figure1.pdf')

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time-history->Not appropriate,- not allowed

ALL&FILE->Not appropriate, & not allowed

Velocity_6-> appropriate

DocList -> appropriate

exp >appropriate
sys470_0 ->appropriate
68_degrees->->not appropriate
@computers_list->not appropriate