百度试题 结果1 题目Cau 3. He phuong trinh:\(3x+2y=85x-2y=8. có nghiem là: A\(x=2y=1. \(x=2y=-1. \(x=-2y=1. \(x=2y=3. 相关知识点: 试题来源: 解析 A 反馈 收藏
百度试题 结果1 题目Cau 7: He phuong trinh\(mx+y=mx+my=m.có nghiem duy nhát khi và chī khi p A. m≠1 B. m≠±1 C. m≠q-1 D. m=±1 相关知识点: 试题来源: 解析 B 反馈 收藏
Participatory Poverty AssessmentDuyen Hai and Chau Thanh DistrictsTra Vinh Province, VietnamOxfam Great BritainSeptember 1999Participatory Poverty Assessment Team MembersFinal Report Site Reports Design and TrainingNguyen Phuong Quynh Tr... Hoi Trinh,Thi Xuan Tuyet Huynh,PT Force - United Nations Developme...
Farmers suggested that rates rebates, as well as subsidized planting and subsidized fencing would motivate them to plant more native bush on their lands.Trinh, Phuong KhanhKaval, PamelaNew Zealand Agricultural and Resource Economics Society
百度试题 结果1 题目Cau 13. He phuong trinh\(mx+y=2mx+my=m+1. vo nghiem khi A A. m=-1. B. m≠q±1 . C. m=1. D.m=-1/2 相关知识点: 试题来源: 解析 A 反馈 收藏
结果1 题目Cau 444. He phuong trinh\(x+y=30100x+10y=310g. co nghiem:A\(x=12y=18. x=18x=15x=15 A. B.I1 C. D.váy=12\(x=14y=16v. a\(x=16y=14. y=15vá\(x=14y=16. y=15 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
百度试题 结果1 题目ax+by =1Cau 6. He phuong trinh có nghiemx=2;y=-1kl i C ax-by=-5 A a=-1;b=3 . B. a=1;b=3 . C. a=-1; b=-3. D. a=-3; b=-1. 相关知识点: 试题来源: 解析 C 反馈 收藏
Vi du 1: cho he phuong trinh\(mx+y=mx+ny=m., m la tham so. He co nghiem duy nhat khi C A. m≠q1 B.m≠-1. C.m≠±1. D. m≠q0 . 相关知识点: 试题来源: 解析 CChọn C.Cách 1:Ta có: .Hệ có nghiệm duy nhất khi .Cách 2:Hệ có nghiệ...
百度试题 结果1 题目Bai 28. Giai he phuong trinh sau\(x^2+2xy+2y^2+3x=0y^2+xy+3y+1=0.(1)(2) 相关知识点: 试题来源: 解析 - Lấy (1)ta được:Nghiệm:. 反馈 收藏
结果1 题目 Giai cac he bat phuong trinh sau:2x2-2x+3-kg3=3-y-4a4|y|-|y-1|+(y+3)≤8log;x-log2x20\(x_3=x_1x-log_2x^20(x_1-x^2)/(3x)-x^2+5x+90. x-1)lg2+lg(2+1)lg(7.2+12)©log, (x+2)2 相关知识点: 试题来源: 解析 a)b)c) 反馈 收藏...