simplify the result from symbolic tool box

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xinyu
xinyu 2014-5-14
评论： Star Strider 2014-5-14
The following result is what I get from the symbolic tool box with the order pretty() and simplify(). How can I have it further simplified?
/ 599522714947050542899 t \
1424715831788883510048000000000 exp| - ----------------------- |
\ 4611686018427387904 /
---------------------------------------------------------------- +
599522714947050542899
14138684084037792909600000000/599522714947050542899

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回答（2 个）

Star Strider
Star Strider 2014-5-14
I don’t see how you can simplify it much more, but if you want to convert the vpa integers to double values, use the Symbolic Math Toolbox double function.
  2 个评论
Walter Roberson
Walter Roberson 2014-5-14
Note that using vpa() or double() would result in approximation not simplification .
Star Strider
Star Strider 2014-5-14
True, but I can’t imagine how much more it could be simplified.
Creating an anonymous function out of it with matlabFunction is the only other possibility I can think of.

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Deepak Ramaswamy
Deepak Ramaswamy 2014-5-14
vpa(yourExpression,16)
would give
2376416766.651975*exp(-130.000766*t) + 23583233.34802504
Is this the sort of thing what you're looking for?

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