A monotone decreasing function 
on an interval 
is a nonincreasing function
and satisfies
 |
for all 
with 
. Equality is allowed.
A strictly decreasing function instead
requires 
for all such pairs.
Monotone Decreasing
See also
Monotone Increasing, Monotonic Function, Nonincreasing Function, Strictly Decreasing FunctionExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Monotone Decreasing." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/MonotoneDecreasing.html