帮个忙解个方程组,-1/2n^2+n=4m①-1/2m^2+m=4n②

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 10:19:54
帮个忙解个方程组,-1/2n^2+n=4m①-1/2m^2+m=4n②帮个忙解个方程组,-1/2n^2+n=4m①-1/2m^2+m=4n②帮个忙解个方程组,-1/2n^2+n=4m①-1/2m^2+

帮个忙解个方程组,-1/2n^2+n=4m①-1/2m^2+m=4n②
帮个忙解个方程组,
-1/2n^2+n=4m①
-1/2m^2+m=4n②

帮个忙解个方程组,-1/2n^2+n=4m①-1/2m^2+m=4n②
-1/2n^2+n=4m①
-1/2m^2+m=4n②
观察两个方程,完全一样.说明这两个未知数是相等的.
所以可以看成m=n
则有
-1/2n²+n=4n
n²+6n=0
n(n+6)=0
n=0,n=-6
即m=n=0和m=n=-6

将①代入②中