taylor expansion of a long expression

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kevin k
kevin k 2015-10-17
评论： Torsten 2015-10-19
Hi
I have a very long polynomial in coefficients u,v,w,z stored in variable f and I would like to truncate high order terms. when I try to calculate: "taylor(f, [u, v, w, z],'Order', 5) " I do not get the result I want but an expression starts with "mtaylor(....) " or some massage that matalb cannot compute it. How can I solve it ? thanks
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Torsten
Torsten 2015-10-19
u,v,w,z are syms and f is not a function handle ?
Please show us your complete call to "taylor"
Best wishes
Torsten.

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回答（1 个）

Walter Roberson
Walter Roberson 2015-10-17
Not all functions have taylor expansions.
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kevin k
kevin k 2015-10-17
the function I have is a homogeneous polynomial. all I want is to truncate the high powers.Maybe there is another way to do it?

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