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Extract a part of expression
- To: mathgroup at smc.vnet.net
- Subject: [mg124293] Extract a part of expression
- From: Miguel Gil <misvrne at gmail.com>
- Date: Mon, 16 Jan 2012 17:07:20 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- Reply-to: comp.soft-sys.math.mathematica at googlegroups.com
How I can extract the full numerator (or denominator) of an expression of the form g (x) / w (x)?.
I tried to do with Numerator [expr], but returns a wrong result. I tried with the attribute HoldForm [expr] and can not get the correct result.
For example:
expr = (x ^ 2 Cos [x] (Sin [2x], Tan [x ]))/( E ^ x * x * Csc [x] ^ 2)
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