Together

• Together[ expr ] puts terms in a sum over a common denominator and cancels factors in the result.
• Example: Together[1/x + 1/(1 - x)] .
• Together makes a sum of terms into a single rational function.
• The denominator of the result of Together is typically the lowest common multiple of the denominators of each of the terms in the sum.
• Together avoids expanding out denominators unless it is necessary.
• Together is effectively the inverse of Apart .

Examples

Using InstantCalculators

Here is the InstantCalculator for the Together function. Enter the parameters for your calculation and click Calculate to see the result.

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Entering Commands Directly

You can paste a template for this command via the Text Input button on the Together Function Controller.

Here is a simple example.

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Here is another example.

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Together explicitly makes it clear that this expression is indeterminate.

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Together simplifies this complicated expression.

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No cancellation is done here.

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THIS IS DOCUMENTATION FOR AN OBSOLETE PRODUCT.