Collecting Terms

To collect terms of a polynomial containing like powers of a specified variable, select the expression for the polynomial and either:

To specify the variable on which to collect terms, type a comma after "collect" and type the variable in the placeholder that appears. Then press [Enter].

Examples:

To write the following expression as a polynomial in x, click collect on the Symbolic toolbar and then type x in the placeholder that appears to the right of "collect."

3x2· y + 5x2· y2 + 7x·y2 + x·y collect, x → (5·y2 + 3·y)· x2 + (7·y2 + y)·x

Mathcad adds the terms 3x2· y + 5x2· y2, containing the term x2, and the terms 7x·y2 + x·y, containing the term x.

If instead you type y in the placeholder, the result is

3x2· y + 5x2· y2 + 7x·y2 + x·y collect, y → (5·x2 + 7·x)· y2 + (3·x2 + x)·y

Note:

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