Sollya User's Manual

Name:

expand expands polynomial subexpressions

Library name:

sollya_obj_t sollya_lib_expand(sollya_obj_t)

Usage:

expand(function) : function -> function

Parameters:

function represents a function

Description:

expand(function) expands all polynomial subexpressions in function function as far as possible. Factors of sums are multiplied out, power operators with constant positive integer exponents are replaced by multiplications and divisions are multiplied out, i.e. denomiators are brought at the most interior point of expressions.

Example 1:

> print(expand(x^3));
x * x * x

Example 2:

> print(expand((x + 2)^3 + 2 * x));
8 + 12 * x + 6 * x * x + x * x * x + 2 * x

Example 3:

> print(expand(exp((x + (x + 3))^5)));
exp(243 + 405 * x + 270 * x * x + 90 * x * x * x + 15 * x * x * x * x + x * x * x * x * x + x * 405 + 108 * x * 5 * x + 54 * x * x * 5 * x + 12 * x * x * x * 5 * x + x * x * x * x * 5 * x + x * x * 270 + 27 * x * x * x * 10 + 9 * x * x * x * x * 10 + x * x * x * x * x * 10 + x * x * x * 90 + 6 * x * x * x * x * 10 + x * x * x * x * x * 10 + x * x * x * x * 5 * x + 15 * x * x * x * x + x * x * x * x * x)

See also: simplify, simplifysafe, horner, coeff, degree

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