MATLAB: How to plot an integral

derivativeerrorhelpintegralMATLABploturgent

Hello!
I need some help plotting the following:
kjb.PNG
This is what I have:
syms x
kw = 91371;
CaO= 1.81*10^(-4);
FaO= 0.1233;
K = 1.29;
fun =FaO*((1+K*CaO*(1-x))/(kw*CaO*(1-x)))
W=int(fun);
fplot(W,[0 1
But nothing comes out on the graph. I want to plot W on the Y-axis and x on the X-axis, between 0 and 1 (because it's a conversion in chemistry).
Does anyone know what I'm doing wrong?

Best Answer

‘But nothing comes out on the graph.’
The result of the int function is a constant. At best, you will get a straight line.
I am not certain what you want. You can get it to plot as a function of the upper limit of integration by creating a function from it: 
syms x a 
kw = 91371;
CaO= 1.81*10^(-4);
FaO= 0.1233;
K = 1.29;
fun = FaO*((1+K*CaO*(1-x))/(kw*CaO*(1-x)));
W(a) = int(fun, x, 0, a);
fplot(W,[0 1])
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