),thank you for your help!若对于m的任何值㎡a+2(m-1)b+(2-m-㎡)c=1恒成立,求a、b、c的值
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),thank you for your help!若对于m的任何值㎡a+2(m-1)b+(2-m-㎡)c=1恒成立,求a、b、c的值
),thank you for your help!
若对于m的任何值㎡a+2(m-1)b+(2-m-㎡)c=1恒成立,求a、b、c的值
),thank you for your help!若对于m的任何值㎡a+2(m-1)b+(2-m-㎡)c=1恒成立,求a、b、c的值
a=2,c=2,b=3/2;
步骤如下:
等式可化为(a-c)m2+(2-c)m-2b+2c=1
因为对m任何值等式恒成立
则必有a-c=0;2-c=0;-2b+2c=1
联立即可得答案
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