symbolic expantion in matlab
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hi,
I need to expand [1- (a1+b1)B ] / (1-b1B) and get a polynomial.
Can someone help me with this please?
Thanks.
1 Comment
Accepted Answer
Walter Roberson
on 8 Mar 2013
A polynomial in which variable? A finite polynomial or an infinite one?
If you need an infinite polynomial in B, then the expression is, using MuPAD notation,
1-a1*(sum(B^n*b1^(n-1), n = 1 .. infinity))
There is no finite version unless you want an approximation.
The above was deduced by examining the taylor expansion around B=0
7 Comments
Walter Roberson
on 8 Mar 2013
What are you expecting the polynomial might look like? And which variable should it be in? Are you looking for an exact polynomial or an approximation? If an approximation, then how close does it need to be? Are there constraints on the values of a1, b1, or B ?
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