Englisch-Finnisch Übersetzung für monotone function

A function ''f': ''X''→'''R'' that either never decreases or never increases as its independent variable increases; that is, either ''x'≤ ''y'implies ''f'≤ ''f'or ''x'≤ ''y'implies ''f'≤ ''f''(''x''
A function ''f': ''X''→''Y' with either: the property that ''x'≤ ''y'implies ''f'≤ ''f'', or the property that ''x'≤ ''y'implies ''f'≤ ''f''(''x''

Where defined, the first derivative of a monotone function never changes sign, although it may be zero

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