need to create a script m-file that uses a for loop to plot the equation of a line (y = m*x + b)

How i do this?

Part a:

In this two-part exercise, you need to create a script m-file that uses a for loop to plot the equation

of a line (y = m*x + b) divided by the iteration variable i. For part a, your code should

1. Create a vector x that ranges from -10 to 10 by 0.2.

2. Create a vector y that is the equation of a line with slope m=3 and y-intercept b=0.

3. Use a for loop to loop through the stored x-values and create a variable ymod that is the i-th y-

value divided by the counter variable i.

4. Plot ymod as a function of x with a black line between points and red circles at the points

Include axes labels and a title too

5. Contain comments on each line of the code explaining what each line does.

Part b:

1. Using conditional statements, do the following:

ymod = y(i)/i for values of y(i) less than 0

ymod = y for values of y(i) greater than or equal to 0 and less than 12

ymod = 12 for all other values of y(i)

2. Plot ymod as a function of x with a black dashed line between points and blue asterisks at the

points. Include axes labels and a title again.

3. Again comment each line of your code, to explain what is going on.

For this exercise, please submit a copy of the code for both section a and b, as well as a

printout of each plot generated with your code.

[madhan ravi]

what have you tried so far?

[tomer kapuri]

I'm a student, and I got an exercise to do it.

I can not write the script

[dpb]

And you're not going to learn how by having somebody else do your work for you...give it a go...you've surely got a class text or other notes and there's a very approachable "Getting Started" section in the Matlab documentation that walks you through how to do the necessary operations to accomplish the exercise.

[tomer kapuri]

I need help writing.

I could not understand how to do it.

After someone explained to me, I would be able to understand.

[dpb]

The general policy in Answers is that we do NOT do complete-solution homework problems--we'll answer specific ML questions on syntax or point out logic issues or otherwise be more than willing to help BUT the student has to show some effort on their part first.

Start at the first step -- surely your instructor has shown you in class how to create a vector in at least a couple of different ways? As noted, https://www.mathworks.com/help/releases/R2018b/matlab/index.html will get you going pretty quickly, you get to an illustration of the first part of the exercise by the third for fourth page that takes about 30 sec/page to skim and get the gist of how things work...

[madhan ravi]

+1 @dpb , @Tomer follow dpb's advice he was the one who motivated me to improve in MATLAB.

[tomer kapuri]

until now i write this:

m =3;
b = 0;
x=linspace(-10,10,0.2);
y = m*x + b;
plot(x,y,);
grid on;

and now i don't understand what i need to do...

"3. Use a for loop to loop through the stored x-values and create a variable ymod that is the i-th y-

value divided by the counter variable i."

[dpb]

OK, that's a start...

Check your work as you go, however...what's the result of

x=linspace(-10,10,0.2);

? linspace is more suited when you know how many elements you want; what's another way you've learned (or the tutorial showed) for creating a vector at a given spacing between bounds?

Did you actually get a plot from the above? (If so, you did something else besides just what is shown).

For 3., what does doc for show for examples to use a loop? Doesn't the very first one show addressing the elements of a (2D) array?