MATLAB: Shade the area under a anonymous function

areafunction

Im trying to visualize the area between my anonymous function and the x-axle but can't find a way of doing so.

Does someone have a method for this?

f=@(x) sin(1-x.^3)
x=0:0.001:2*pi;
area(x,f(x))

divide all numbers by the area that you calculate using Trapz.

x=0:0.1:pi;
y=sin(x);
Area=trapz(x,y)
Area =
      1.9975
y_normalized=y./Area;
trapz(x, y_normalized)
ans =
      1.0000

syms x
f=sin(x)/(x^2+1);
fplot(f)       
derivative=diff(f,x)
derivative_when_x_equals_one=double(subs(derivative,x,1))