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Trung tam on luyen toan.. Ho ten :..a[r]
(1)Trung tam on luyen toan
Ho ten : Lop:10
De kiem tra hoc ky Mon:Toan Thoi gian:90 phut
de Diem Cau:1 Tim tap xac dinh cua ham so sau:
a y= x−1 x2−5x+6
b y=√6x−3
Cau:2 Xet su bien thien cua ham so sau: a y=−1
2x+ b y= 2x2+ 3x+ 5
Cau:3.Xet tinh chan,le cua ham so sau: a y=x4−3x2+
b y= 2x3−3x c y=x4+x3+ 3
Cau:4 Ve duong thang sau:y=|x−2|
Cau:5 Tim parabol(P) biet:(P) di quaA(1;−2)va co dinhS(2;−9 2) Cau:6 Giai phuong trinh sau
a √14x+ =√x2−3x+ 18 b x2+ 5x− |3x−2| −5 =
(2)Trung tam on luyen toan
Ho ten : Lop:10
De kiem tra hoc ky Mon:Toan Thoi gian:90 phut
de Diem Cau:1 Giai he phuong trinh sau
(
3x-2y=6(1) 9x+4y=-6(2)
x+y+z=2(1) x+y+3z=1(2) 2x+y+3z=-1(3) Cau:2 Giai va bien luan phuong trinh sau:
a m(x−2) = 3x+ b m2x+ = 4x+ 3m
Cau:3 Cho phuong trinhx2−2(m−1)x+m2−3m+ = 0 a timm de phuong trinh co mot nghiem
b tim m de phuong trinh co hai nghiem thoax21+x22= 20