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Code code:"if (foo != bar)"
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Search options not deleted user 53596
5 votes
2 answers
917 views

Replacing dot by *?

I am unable to replace dot by *. Replace[a.a, .-> *] Is there any solution to get this done?
Mark Robinson's user avatar
6 votes
1 answer
555 views

Pattern test: _Integer vs _?IntegerQ [closed]

While checking out the different pattern replacement methods in this question, I have a query regarding the basic difference between the following two replacements: expr = a x^3 + b x y - c x^7 y^2; … Integer :> x^Mod[m, 2]} The first replacement works as expected, but the second replacement does not do anything. What is happening in the second one. …
Mark Robinson's user avatar
4 votes
1 answer
1k views

Replacement using pattern matching?

Starting with the expression eq1 = 5 Exp[1 + 2 x + 3 x^2 + 4 x^3]; I want to implement the following transformation: eq1 /. Exp[a_ x^2 + b_ x^3] -> f[a/b] However, I am not getting the desire …
Mark Robinson's user avatar