De he pt co nghiem duy nhat thi:
m/4 khac 1/m (m khac 0) <=> m^2 khac 4<=> m khac 2;-2
Vay de he pt co nghiem suy nhat thi m kgac 0;2;-2
De he co vo so nghiem thi:
m/4=1/m=2m/(m+6)=2m/8=(2m+1-2m)/(8+m-m-6)=1/2
=> m=2
vay de he co vo so nghiem thi m=2 va m khac 0
De he vo nghiem thi: m/4=1/m khac 2m/m+6
<=>m+1/m+4 khac 2m/m+6
nhan cheo roi tim dk cua m de he vo nghiem
Đúng 0
Bình luận (0)