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Question: numeric solution - want y'(x) as procedure

Question:numeric solution - want y'(x) as procedure

garfieldpbj 28 Maple
plot graph
March 13 2007
0
Hi.. I'm a quite new user of maple, so I've got a question: I'm trying to solve a ode numeric with maple. I've got a solution, a procedure where I a can get a value of y(x) for any x.. (and also plot the "function") Additionally I would like to have a procedure which can give me the slope of the graph - y'(x) for any x. Can anyone help me to solve this problem? My code so far is: lignsub:=diff(y(x), x, x) = 0.7904982116e-3*sqrt(1+(diff(y(x), x))^2)/(1+0.1012020000e-2*sqrt(1+(diff(y(x), x))^2)) `løsning` := dsolve({lignsub, y(0) = 0, (D(y))(0) = 0}, type = numeric, output = listprocedure) [x=proc(x) ... end proc,y(x)=proc(x) ... end proc,(ⅆ)/(ⅆx) y(x)=proc(x) ... end proc] u := subs(løsning, y(x)) proc(x) ... end; u(500) 100.000182771470037 /Peter
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