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Given an equation, i have to graph it in 3D and it should look like a water ripple

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12ar.af
12ar.af 2011-8-28
hi. i need help urgently. i was given an equation: z(x,y)=(amp*cos(sqrt((x^2+y^2)*const1))/exp((x^2+y^2)*const2)) amp is the amplitude which is 200 and x and y range from 0 to 100 const1 and const2 can be any number I am required to surf plot this equation so that it can look like a water ripple.
Please help me

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Paulo Silva
Paulo Silva 2011-8-28
amp=200;
[x,y]=meshgrid(0:100,0:100);
const1=1;
const2=0.001;
z=(amp*cos(sqrt((x.^2+y.^2)*const1))./exp((x.^2+y.^2)*const2));
surf(x,y,z)
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Paulo Silva
Paulo Silva 2011-8-28
finally you might want some transparency on your water ripples, add this line to the end of the code: alpha(0.9) %the argument must be inside the interval [0 1]

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