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Question: How could I dérivate diff( 5x^2 +y, x^2) ?

Question:How could I dérivate diff( 5x^2 +y, x^2) ?

Ternox 129 Maple
October 23 2009
0

Hello everybody,

I am happy to join you.

Well... I have an inverted pendulum modelisation, with several theta, theta dot, double dot ...
With Lagrange method, I need to derivate by Theta1(t) dot. However I am unable to do it.

 

My question is: How to do diff( 5x^2+y,  x^2) ???

The result should be 5.
 

I have I will be able to adapt yours answers to my probelm succesfully.
Many thanks

Ternox
Ps: I use Maple13.

 
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