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Đề thi chuyên toán Lê Khiết!!!!!!! on Thu Jun 28, 2012 8:19 pm
boylucky_khocthamvjem
Sinh viên
Bai 1: 1/ A=2.(bai nay de rui)
2/ Cho x,y thoa man x^2+y^2-2xy-2x+4y-7=0.Hay tim x khi y dat gia tri lon nhat (bai nay minh lam y=4 <=> x=5
Bai 2: 1/ Giai phuong trinh: x^3+2=3<Can bac ba>(3x-2)
2/ Giai he phuong trinh: x/y+y/x=7/xy -1 va x+xy+y=5
Bai 3: 1/ Tim so tu nhien n de n^5+n^4+1 la so nguyen to.
con nua ban rui xj post tiep
2/ Cho x,y thoa man x^2+y^2-2xy-2x+4y-7=0.Hay tim x khi y dat gia tri lon nhat (bai nay minh lam y=4 <=> x=5
Bai 2: 1/ Giai phuong trinh: x^3+2=3<Can bac ba>(3x-2)
2/ Giai he phuong trinh: x/y+y/x=7/xy -1 va x+xy+y=5
Bai 3: 1/ Tim so tu nhien n de n^5+n^4+1 la so nguyen to.
con nua ban rui xj post tiep
