What is suitable script for the question?

plot?

what is the difference between 2 script mentioned below for the above question?

Script 1: Script 2:

x=linspace(0,pi,100); x=[0:pi];

>> y=cos(x); y=cos(x);

>> z=1-((x.^2)/2)+((x.^4)/24); z=1-((x.^2)/2)+((x^4)/24);

plot(x,y,x,z) plot(x,y,x,z)

[Walter Roberson]

Use

hold on

between the two plot calls

[Manuj Sharma]

Which is correct script for the above question?

[Walter Roberson]

Looking again, I see that you only have one call to plot. You do not need hold on with the way you plot.

[Walter Roberson]

As edward pointed out, in script 2 you are missing . before ^4 . That would cause the code to fail.

If that were to be changed, then both scripts would work. However, the first script would plot 100 points starting at 0 and ending at pi, but the second script would plot only at locations [0, 1, 2, 3]

Answer 1

[edward holt]

Short answer: script 1.

x = linspace(0,pi,100)

creates a vector with 100 values in between 0 and pi, so when plotting y and z against x you get a nice smooth plot.

x = 0:pi

on the other hand creates just a vector of length 4. [1 2 3 4] Plotting y and z over this will not be smooth.

Also in script 2 there is a missing '.' before '^4'

[John D'Errico]

Please, when no effort is made, please try not to just do people's homework for them. You can guide them if they make an effort, but if all you do is their homework, then you make the site into a place where that is expected.

[edward holt]

My apologies. Thank you for pointing this out to me.

[Manuj Sharma]

This is not my assignment or home work. I a beginner in MATLAB and have some issues with understanding the code.