Mathematica 9 is now available

Together

Usage

Together[expr]把各项放到一个具有共同分母的和式,消去结果中的因子。


Notes

• 例如: Together[1/x + 1/(1-x)]LongRightArrow .
Together 使得项的和为一个单一有理函数。
Together得到的结果的分母典型的是和式中每项分母的最小公倍数。
• 除非必须,Together避免展开分母。
TogetherApart的逆。
Together[expr, Modulus->p]产生一个模 p的结果。
Together[expr, Extension->Automatic]expr中允许在代数数上执行运算。
Together[expr, Trig -> True] 处理三角函数为指数的有理函数,并相应的操作它们。
• 参见Mathematica 全书: 1.4.5 and 节 3.3.3.
• 同时参见: Cancel, Collect, Factor, PolynomialGCD.
Further Examples

Here is a simple example.

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Here is another simple example.

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Together explicitly makes it clear that this expression is indeterminate.

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Together simplifies this nasty expression.

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No cancellation is done here.

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You can cancel out a common factor by setting the option Extension to Automatic.

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Here are two modular examples.

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