sage: sage.version.version '8.6' sage: ex=exp(2*x)+exp(-2*x); ex e^(2*x) + e^(-2*x) sage: factor(ex) 2*e^(2*x) sage: bool(factor(ex)==ex) False sage: bool(factor(e^(2*x)+e^(-2*x))==e^(2*x)+e^(-2*x)) False sage: bool(factor(2^(2*x)+2^(-2*x))==2^(2*x)+2^(-2*x)) True
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