2. The minimum value is the minimum value in the known data.

The maximum and minimum values of a set are the largest element and the smallest element in the set respectively, and the maximum and minimum values of a function are collectively called extreme values.

3. Distinguishing method:

In the function image or setting image, the highest point is the maximum value and the lowest point is the minimum value.

Extended data:

Solution of maximum and minimum values;

1, alternative method

Taking some parts as a whole and replacing them with new letters (that is, exchanging elements) can simplify and clarify complex problems.

2. Discriminant solution

Points with discriminant =0 can be maximum points and minimum points.

First, judge whether the equation has roots and how many, B2-4ac；; 0 has two unequal roots.

3. Solution of monotonicity of function

F(x) is generally found by derivative method. The tangent equation of the curve is obtained by calculating the derivative of the function, and the tangent point may be the maximum point and the minimum point.

References:

Max _ Baidu Encyclopedia

Minimum _ Baidu Encyclopedia