defining a variable in matlab

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Nicholas
Nicholas 2013-9-10
V = ((pi*h^2)/3)*((3*r)-h)
plot(h,V)
??? Undefined function or variable 'h'.
Error in ==> p5_22 at 6 V = ((pi*h^2)/3)*((3*r)-h)
I'm sure this is very simple but i forgot how to tell matlab that 'h' is a variable

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采纳的回答

CVR
CVR 2013-9-10
hi there, you can use this one
h = 1:1:10 (create variable h from 1 to 10)
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Nicholas
Nicholas 2013-9-10
ok, so since h is now a vector i need to add dots in my equation for it to work...where do i insert them?

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更多回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2013-9-10
h=0:0.1:10
r=5
V= (pi*h.^2/3).*(3*r-h)
plot(h,V)

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