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anonymous

  • one year ago

I'm stuck again in MATLAB. Can anyone help me out? I'll post the problem below.

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    What I did so far..... P.S. I'm new to Matlab so please take it easy on me :P

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  3. math&ing001
    • one year ago
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    That's a good start, the error you got is due to a wrong multiplication of arrays. In Matlab we use .* instead of * in element-by-element multiplication. I would use something along these lines: s=linspace(0,pi,100) t=linspace(0,2*pi,200) [s,t]=meshgrid(s,t); r=5+sin(10*s+5*t); y=r.*sin(s).*sin(t); x=r.*cos(s).*sin(t); z=r.*cos(t); surf(x,y,z)

  4. anonymous
    • one year ago
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    oh okay thank you so much! here's my output:

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  5. math&ing001
    • one year ago
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    I hope they're not expecting a sphere, cause that looks nothing like it :P Also they should have given you the range of s and t. Above, I put randomly 0<t<2*pi and 0<s<pi

  6. anonymous
    • one year ago
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    Don't worry, they are not asking for sphere because I already made a sphere on the previous question :P This one we have to rotate on the xy plane so it will look like a flower (see image below) this is the code that I used, just posting it here for future reference: syms s t r= 5 + sin(10.*s+5.*t); y= r.*sin(s).*sin(t); x= r.*cos(s).*sin(t); z=r.*cos(t); figure ezsurf(x,y,z, [0, 2*pi, 0, pi]) I based it from what you did ;) Thanks again!

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  7. math&ing001
    • one year ago
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    You're much welcome =)

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