论文部分内容阅读
最值定理是指:设x,y都为正数,则有①若x+y=S(和为定值),则当且仅当x=y时,积xy取得最大值S42;②若xy=P(积为定值),
The maximum value theorem means that if x and y are positive numbers, ① if x + y = S (sum is a constant value), the product xy obtains the maximum value S42 if and only if x = y; ② if xy = P (product is a fixed value),