Re: open parenthesis and reduce an expression

• To: mathgroup at smc.vnet.net
• Subject: [mg75148] Re: open parenthesis and reduce an expression
• From: dimitris <dimmechan at yahoo.com>
• Date: Wed, 18 Apr 2007 05:08:31 -0400 (EDT)
• References: <f01507\$9gp\$1@smc.vnet.net>

```Are you sure about your expression?

=CF/=C7 kem =DD=E3=F1=E1=F8=E5:
> Hi, How can I reduce the following formula for instance
> (Cos[b[x,y]] zx[x,y]-Sin[b[x,y]] zy[x,y]) (zxx Cos[b[x,y]]+zyx
> Cos[b[x,y]]+
>       zxx Sin[b[x,y]]-zyx Sin[b[x,y]]+bx (Cos[b[x,y]]-Sin[b[x,y]])
> zx[x,y]-
>       bx (Cos[b[x,y]]+Sin[b[x,y]]) zy[x,y])
>
> to the formula
> zxx zx + zyx zx
> in mathematica?
>
> I know that such a reduction is possible since I did it manually, I
> just need to test it on more complex expressions.
>
> Thank you very much
>
> kem

```

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