Questions about Mathematica's rule-based replacement functionality, including functions such as Rule (->), Replace, ReplaceAll (/.) and ReplaceRepeated (//.).
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Problem using replace to simplify logarithms [duplicate]
Is there a way to combine logarithm terms like
9 m Log[m]-9 m Log[M]+16 m M Log[m]-16 m M Log[M]
into
...
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0answers
87 views
Efficient way to give symbolic elements symmetry
I have a symbolic expression that represents a set of operators. These operators have quite a bit of symmetry to simplify expressions:
...
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0answers
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How do I replace a variable with the answer from a solve function in the form k-> number + variables? [duplicate]
Possible Duplicate:
Using the result of Solve in subsequent calculations
extract values from replacement list
I am trying to define a variable (k1) as ...
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0answers
105 views
How to apply rules to the elements of a sparse array? [closed]
I have two text files that I am importing, one is a sparse array of format {large row index,column,value1} and the other is {large row index,value2}. The row values are a small subset of a much larger ...
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1answer
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How to make rules for changing parameters
I have one boring problem with changing parameters in printing output. If I have
equation
...
