Groups > comp.soft-sys.math.mathematica > #2692

Re: get a, b from numbers in the form a+b Pi

From	Simon <simonjtyler@gmail.com>
Newsgroups	comp.soft-sys.math.mathematica
Subject	Re: get a, b from numbers in the form a+b Pi
Date	2011-05-25 09:56 +0000
Organization	Steven M. Christensen and Associates, Inc and MathTensor, Inc.
Message-ID	<irijnq$qde$1@smc.vnet.net> (permalink)

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The CoefficientList solution can be "fixed" by padding the results:

In[1]:= nums = {0, 1, 2, \[Pi], 3 \[Pi], -1 + \[Pi]/2, 3 + 3 \[Pi], 
   3 I + 3 \[Pi], I + E^(I \[Pi]/2) \[Pi]};

In[2]:= PadRight[#, 2] & /@ CoefficientList[nums, Pi]

Out[2]= {{0, 0}, {1, 0}, {2, 0}, {0, 1}, {0, 3}, {-1, 1/2}, {3, 
  3}, {3 I, 3}, {I, I}}

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Re: get a, b from numbers in the form a+b Pi Simon <simonjtyler@gmail.com> - 2011-05-25 09:56 +0000

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