Question: can you color a certain part of a 2d plot, for instance a line up to x=0.5 if you have a hyperbel curve?

Dear community, 

I'm new to maple and was wondering if you could help me out.

I have this curve where I want to make a line that goes from x=0.5 up to its value on the curve in this case 1.60 and then all the way to the y-axis so there is an area under the curve which I can color if that's even possible?

I have the following in maple:

k := 2.5;
Ca0 := 1;
v := 20;
Ca := Ca0*(1-x);
                             1 - x
Fa0 := Ca0*v;
Cb := Ca0*x;
ra := k*Ca*Cb;
                         2.5 (1 - x) x
plot(1/ra, x = 0 .. 1);

thank you for your help

Best Regards


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