Thanks for your help!

View 10396_lab2try.mw on MapleNet or Download 10396_lab2try.mw
View file details

here is the complete worksheet that shows what I have done so far....

I just tried the display(p1, p2, p3, p4) and it still is giving no graph.  Do you think it has something to do with the functions?  Here are p3 & p4...

p3(x):=(901.1/((3.9+227.1*(e)^((-0.030*( x+10)))))-901.1/((3.9+227.1*(e)^((-0.030*x)))))/(10);

p4(x) :=(60447.9/(131.7+327.3(e)^((-0.0225 *(x+10)+3.3750)))-60447.9/(131.7+327.3(e)^((-0.0225*x+3.3750))))/(10);

I just tried the display(p1, p2, p3, p4) and it still is giving no graph.  Do you think it has something to do with the functions?  Here are p3 & p4...

p3(x):=(901.1/((3.9+227.1*(e)^((-0.030*( x+10)))))-901.1/((3.9+227.1*(e)^((-0.030*x)))))/(10);

p4(x) :=(60447.9/(131.7+327.3(e)^((-0.0225 *(x+10)+3.3750)))-60447.9/(131.7+327.3(e)^((-0.0225*x+3.3750))))/(10);