# Need help on designing plot

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KSK le 27 Mai 2015
Commenté : KSK le 27 Mai 2015
Dear all,
Can anyone help me with the below? Appreciate if anyone can help. Thank you!
Design an x-y plot for the following where the values of x are from 0 to 20π with a spacing of π/100.
a. y = x.sin(x)
b. z = x.cos(x)
c. Convert the above 2D into a 3D plot using z as the third axis
Regards,
Martin
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### Réponse acceptée

Youssef Khmou le 27 Mai 2015
Modifié(e) : Youssef Khmou le 27 Mai 2015
defining the variable is the first step :
x=0:pi/100:20*pi;
using element wise operation :
y=x.*sin(x);
z=x.*cos(x);
Three dimensional graph is given by :
plo3t(x,y,z)
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KSK le 27 Mai 2015
Youssef Khmou Thank you very much! its work! i got two more question i posted today. hope you can help me. =) Really appreciated!

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