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How do I plot this?

Asked by Ladeanne Graycochea on 21 Feb 2018
Latest activity Commented on by James Tursa
on 23 Feb 2018
y=2*sin(x),if x<20
y=cos(3x),if 20x<40
y=sin(0.3x),if 40x<60
y=8*sin(x),if 60x
y=6,if 6<y
Requirements: (1) The plot should have x label, y label, and title. All of these should be Times New Roman, 12 pt. (2) x range from 1 to 100 with 0.1 increment. Plot x-y.

  2 Comments

This doesn’t make sense:
y=6,if 6<y
We could ignore that last part.

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1 Answer

Answer by Roger Stafford on 23 Feb 2018

I assume you had in mind that x is given in degrees. You will get some discontinuities with these:
x1 = 1:.1:20; y1 = 2*sind(x1);
x2 = 20:.1:40; y2 = cosd(3*x2);
x3 = 40:.1:60; y3 = sind(.3*x3);
x4 = 60:.1:100; y4 = min(8*sind(x4),6);
plot([x1,x2,x3,x4],[y1,y2,y3,y4],'y-')
I will let you work out the label and title details.

  1 Comment

Roger, this is tagged as homework!

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