 Rank: Newbie
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Joined: 14/10/2012(UTC) Posts: 2  Location: Western Cape
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Hello, first of all, thank you for a really good program.
My question: Is it possible to display a symbolic expression a a different form. For example, I have a transfer function in factored form, but I would like it expanded so that I can easily find the various coefficients of s, s^2, ... etc.
Is there a way to do this? (probably a noob question?)
Using 0.95
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Rank: Newbie
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Joined: 25/04/2013(UTC) Posts: 8  Was thanked: 1 time(s) in 1 post(s)
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sorry to bump an ancient topic but this would be reaaaaallllyyy handy.
For example (-1+λ)*(1+λ)+5 --> = (-1+λ)*(1+λ)+5. I can't find any way to make it perform the multiplication and end up with λ^2 + 4.
Any Ideas?
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 1 user thanked natezimmer for this useful post.
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 Rank: Advanced Member Groups: Registered
Joined: 15/04/2012(UTC) Posts: 1,987  Was thanked: 1124 time(s) in 721 post(s)
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Originally Posted by: natezimmer 
For example (-1+λ)*(1+λ)+5 --> = (-1+λ)*(1+λ)+5. I can't find any way to make it perform the multiplication and end up with λ^2 + 4.
You can use SMath Studio with Maxima (see signature for download link) File Attachment(s):  simp.sm (5kb) downloaded 132 time(s).mkraska attached the following image(s): |
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Rank: Newbie
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Joined: 25/04/2013(UTC) Posts: 8 Was thanked: 1 time(s) in 1 post(s)
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Originally Posted by: mkraska Originally Posted by: natezimmer
For example (-1+λ)*(1+λ)+5 --> = (-1+λ)*(1+λ)+5. I can't find any way to make it perform the multiplication and end up with λ^2 + 4.
You can use SMath Studio with Maxima (see signature for download link) Did I ever mention how handsome you are? That portable plugin w/ max version is aawweeessomme! I would thank you a million times but I get an error when I try to do it even once.
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Rank: Newbie
Groups: Registered
Joined: 25/04/2013(UTC) Posts: 8 Was thanked: 1 time(s) in 1 post(s)
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Edit:
Still having issues. I can't prevent max from factoring.
if I change the example to (-2+λ)*(1+λ)+5 --> 3+λ*(-1+λ)
I've tried expand, multthru ...ect without luck. Attempting to get λ^2 -3*λ +λ
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Rank: Advanced Member Groups: Registered
Joined: 15/04/2012(UTC) Posts: 1,987 Was thanked: 1124 time(s) in 721 post(s)
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Sometime Maxima-results are modified by SMath's simplifier. If you set optimization->None then you get the original Maxima answer.
Maxima(expandwrt((-2+λ)*(1+λ)+5,λ))=λ^2-λ+3 |
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