Shade area under curve between two x values

If I have a function, how do I shade the area underneath its graph between two x values? I've been using the area function, but it only lets me shade the area underneath the entire curve, which is not what I want.

For example, between to ?

Answer 1

[Robert U]

Hi pvtstaticvoid:

You may define different intervals with area()-function. Using hold you can plot into the same axes as the function is plotted:

% define example function
f = @(x) x.^3;

% define plot intervals
plotInterval = -8:0.1:8;
areaInterval =  4:0.1:6;

% plot into one figure/axes
fh = figure;
ah = axes(fh);
plot(ah,plotInterval,f(plotInterval))
hold on
area(ah,areaInterval,f(areaInterval))

Kind regards,

Robert