Plot 2 curves on the same graph (with function and data)

I want to plot 2 curves on 1 graph. However, one curve is a function (f) so I would usually use fplot. The other curve is found with data (t30, A30). I tried to plot them on the same graph but it doesnt work. Can someone help me please? Thank you

[Walter Roberson]

Because you divide t30 by 1000, your t30 will end up slightly over 0.1 apart from each other. To reach as high as the [0 10] upper bound of the fplot, you would need to be plotting about 95-ish points. Do you have that many?

It is not generally a problem to hold on and plot over an fplot, provided that the range of values is large enough to cover a notable fraction of the area.

syms x
f = x^2 .* cos(x)

f = 

fplot(f, [0 10])
hold on
plot(0:5, [.1 .5 -.1 3 4 -2])

[rasse_uo]

Yes I have 125 points. It works now, thank you!