defining a variable in matlab

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

[Azzi Abdelmalek]

what is the value of h?

Answer 1

[CVR]

hi there, you can use this one

h = 1:1:10 (create variable h from 1 to 10)

[Nicholas]

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?

[Nicholas]

i got it thank you

Answer 2

[Azzi Abdelmalek]

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