Plotting a function which has two dependent variables and shows it with colour intensity

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Wei Chuang Lee
Wei Chuang Lee 2020-4-23
编辑： Deepak Gupta 2020-4-23
I apologize if someone asked similiar question before, but I tried to search it always comes out with two independent variables.
I would like to make a plot of the function like this, where y is a function of x, z is a function of x,y
x=[0,pi/2]
y=x^2+sinx
z=f(x,y)= ln(x+20)*y/(x+2y)
x=linspace(0,pi/2,50);
y=x.^2+sin(x);
z=(ln(x+20).*y)./(x+2*y);
and i tried to code the function directly, and I would like to plot it in 2D by showing x-y graph while the z is shown in color intensity (or 3D and I can rotate it)
I struggle it so much as I couldn't get more information from the website, as the most of them, the x,y variables are independent.
Trillion of Thanks in advance!!! Thank you!

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回答（1 个）

Deepak Gupta
Deepak Gupta 2020-4-23
编辑：Deepak Gupta 2020-4-23
Hi Wei,
Try plot3 or surf function to plot.

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