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PolynomialQ behaviour

You can use FreeQ[] to test dependence. I hope that the following function will help you: ...
A. Kato's user avatar
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11 votes
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PolynomialQ behaviour

We can use PolynomialExpressionQ, which has an optional 3rd argument that tests if all coefficients satisfy a constraint: ...
Greg Hurst's user avatar
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6 votes

PolynomialQ behaviour

A slight variation of Julien Kluge's answer using Variables, which gives a list of all independent variables in a polynomial. ...
Domen's user avatar
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4 votes

PolynomialQ behaviour

The function $x^3-x+2$ is a polynomial in $x$ with coefficients {2,0,-1,1}. For $y$ and $z$ its a polynomial with coefficients ...
Julien Kluge's user avatar
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Evaluating square roots of quartic powers

I think PowerExpand is what you need as in PowerExpand[Sqrt[a^4 b^4 c^4 d^4]] (* a^2*b^2*c^2*d^2 *)
Somos's user avatar
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Evaluating square roots of quartic powers

Simplify[Sqrt[a^4 b^4 c^4 d^4]] Gives Sqrt[a^4 b^4 c^4 d^4] Now ...
Nasser's user avatar
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