非线性优化

From wiki

In mathematics, nonlinear programming is the process of solving an optimization
problem where some of the constraints or the objective function are nonlinear.
An optimization problem is one of calculation of the extrema
(maxima, minima or stationary points) of an objective function over a set of
unknown real variables and conditional to the satisfaction of a system of
equalities and inequalities, collectively termed constraints.

到底什么是非线性优化