How to find the minimum triangle area and the minimum triangle perimeter in the quadratic function of junior high school mathematics? Can you tell me how to solve this problem? Thank you! !
Let the area or perimeter be y, the length of one side that affects the area or perimeter or the change of area be x, and the length of the other side be represented by x, and then establish a quadratic function with the sum of area = side length * side length or perimeter = side length. After simplification, find out that a, b and c are at x=-b/2a, and then substitute them to find out the minimum area or circumference. I hope to adopt. Ask again if you have questions.