题目内容

(本题6分)已知关于的方程.

1.(1)如果此方程有两个不相等的实数根,求m的取值范围;

2.(2)在(1)中,若m为符合条件的最大整数,求此时方程的根.

 

 

1.(1)解:.

.··················································· 1分

∵该方程有两个不相等的实数根,

.·························································································· 2分

解得.

m的取值范围是

2.(2)解:∵

∴符合条件的最大整数是 .···························································· 4分

此时方程为

解得.

∴方程的根为 .

解析:略

 

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