1/x-1/y=1/100所以1/y=1/x-1/100所以y=100x/(100-x)x为正整弊盯判察数,100x>0,y>0所以100-x>0,即x<100所以x取值为1≤x≤99x越大100-x越小,100x越大,所以x越大,100x/(100-x),也就越大所以租冲和x取最大99,y=100*99/(100-99)=9900
转换一下就可以了,Ymax=999000