Các câu hỏi tương tự
cho he phuong trinh 3x-y=2m+3 va x+2y=3m+1 tim m de he phuong trinh co 2 nghiem x y thoa man x^2+y^2=5
Xác định m thuoc Z de he phuong trinh sau co nghiem nguyen duy nhat:
\(\hept{\begin{cases}3x+\left(m-1\right)y=m+1\\\left(m+1\right)x+y=3\end{cases}}\)
\(\hept{\begin{cases}x+my=m+1\left(1\right)\\mx+y=3m-1\left(2\right)\end{cases}}\)
tim m de he phuong trinh co nghiem duy nhat (x;y) sao cho x;y co gia tri nho nhat
cho he ptrinh
{mx+2my=m+1x+(m+1)y=2{mx+2my=m+1x+(m+1)y=2
a,giai he khi m=√22
b,tim m de he co nghiem duy nhat {x>0y>0
cho he phuong trinh mx-y=m2 va 2x + my= m2 + 2m + 2
a, chung minh rang he phuonh trinh luon co 2 nghiem duy nhat voi moi m
b, tim m de bieu thuc: A = x2 + 3y + 4 nhan gia tri nho nhat
c, khi he co nghien duy nhat (x;y) chung minh M (x;y) luon nam tren duong thang co dinh
Tim m de
m(m-3)x+m-3=0
a,co nghiem duy nhaat
b,vo nghiem
c,co vo so nghiem
cho he phuong trinh\(\hept{\begin{cases}mx-t=2m\\x-my=1+m\end{cases}}\)
a.giai hpt khi m=-2
b.tim m de hpt co nghiem duy nhat.tim nghiem duy nhat do.
c.chung to M(x,y) luon thuoc 1 duong thang co dinh voi (x,y)la nghiem tim dc o cau b.
Cho he phuong trinh sau:
\(\hept{\begin{cases}\left(m+1\right)x+my=2m-1\\mx-y=m^2-2\end{cases}}\)
Tim m de he phuong trinh co nghiem duy nhat (x;y) thoa man P= xy dat gia tri lon nhat.
tim gia tri nguyen cua m de hpt
\(3x-y=2m-1 va x+2y=3m-2\)
co nghiem (x;y) tm x^2 + 2y^2 = 9