Changes http://wiki.axiom-developer.org/WikiWikiWeb/diff -- \begin {axiom} a := (10 * x**2 * y**3 + 13 * x - 7) * ( (3 * x**2 - 7 * y**2) ** 2) / ( ((5 * x**2 * y**2 + 1) ** 2) * ((x - y)**3) * ((x + y)**2) ) b := (13 * x**3 * y**3 + 75 * x**3 * y + 81 * x * y - x + 19 ) / ( (5 * x**2 * y**2 + 1) * (x - y) * ((x+y)** 3) ) f := D(a, x) * D(b, x) g := D(a, y) * D(b, y) \end{axiom}
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