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Roots of a function: Difference between revisions
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This is a slightly optimized version of the '''F''' function.
<br><br>When doing thousands of evaluations, every little bit helps.
Using <big> '''x+x''' </big> instead of <big> '''2*x''' </big> is faster.
<lang rexx>/*──────────────────────────────────F function────────────────────────────────*/
f: procedure; parse arg x; x2=x*x; return x*x2 - 3*x2 + x+x</lang>
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