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These are questions asked by headbam

strange.mw

Hi,

i have a question concerning dsolve. I think i typed two identical lines however maple just seems to accept one of these. I am slightly confused. Any suggestions about what might have gone wrong here?

Best regards

I am not quite sure wether this question belongs into this Forum but i will post it anyway (plz just give me a hint if i am wrong here).

In the Maple file i attached i wrote a solution for the Kepler-Problem(eq1) which i developed with Maple. I isolated r and simplified the result (eq2a).

However solutions from text book look a little different (it can be seen in Whatitshouldbe). I am sure that both functions are the same (i plotted both functions...

I would like to index Variable names like how it is common in physics (just as an addition to the variable name to distinct between say t_{a} and t_{b} just as two different times). However i am not sure how to do this and make maple treat for example t_{a} EXACTLY like if it would be called ta.

int(1/2*m*(-x[b]+x[a])^2/(-tb+ta)^2,t = ta .. tb)

is evaluated but

int(1/2*m*(-x[b]+x[a])^2/(-t[b]+t[a])^2,t = t[a] .. t[b])

I am new to Maple and intended to solve a differential equation (at least numerically) but i encountered some problems. I attached the Maple file. Equation 1 is the DE, which has the general solution seen in (2).

The general solution can be taylored to match certain boundary conditions (see (3)) which in this case are y(5)=1 and y(10)=5. I eventually plotted the function.

However when i tried to obtain a numeric solution i got an error from Maple...

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