Suppose you take X pills of medicine A and Y pills of medicine B every day. In addition to the given four constraints, you should also add.
X>0, y>0, so we can give the light green effective area in the figure below, where
Integer points all meet the constraints given in the topic, so it is enough to find the maximum or minimum value in these points. ...
In this process, the most critical step is to give conditional expressions and draw pictures.
The answer is obvious.
(1) What professors are there in Fuzhou University?
I am a material science and engineering major in Fuzhou University. If there are professors who want to skip