kiểm tra chương 2 đại số 9 có ma trận

... đây có thể kết hợp với (1) để đợc một hệ phơng trình bậc nhất có hai ẩn có vô số nghiÖm ? A. 2x – 2 = - 2y ; B. 2x – 2 = 2y ; C. 2y = 3 2x ; D. y = 1 + x. Câu 4 (1điểm ) Cho hệ phơng trình 2 ... trong 10 ngày thì xong nên ta có phơng trình 1 1 1 10x y + = ( 1) 1 ®iÓm I/ Mục tiêu - HS đợc kiểm tra kiến thức về chơng hệ phơng trình bậc nhất 2 ẩn. - Kiểm tra kỹ năng vận dụng qui tắc ... hệ phơng trình,khi nào thì hệ phơng trình có nghiệm duy nhất, có vô số nghiệm, vô nghiệm. - HS có thái độ làm bài nghiêm túc, sáng tạo. II/ Ma trận đề CHủ Đề NHậN BIếT THÔNG HIểU Vận dụng Trắc...

Ngày tải lên: 16/06/2013, 01:27

... a ≤ 0. Tính 2 121 16 22 5 81 a + . Kết quả là: A. 11 4 25 9 a + ; B. 11 4 25 9 a − ; C. 10 4 21 9 a + ; D. Một kết quả khác Câu 5: Tính : 5 12 2 75 5 48+ − bằng A. 3 ; B. 2 3 ; C. 3− ... ) Bài 1(1 điểm) Giải phương trình: 2 (2 3) 5x + = Bài 2: (2 điểm)Tình A = 6 4 2 6 4 2 2 6 4 2 2 6 4 2 + − + + + − − Bài 3: (3 điểm) Cho biểu thức: A = 1 2 4 2 2 x x x x − − − + − a) Tìm điều kiện ... Chuẩn bị đề bài; HS: Chuẩn bị giấy làm bài kiểm tra, nháp III. Kiểm tra: Kiểm tra một tiết IV. Tiến trình bài giảng: Phát đề cho HS rồi HS làm bài. MA TRẬN ĐỀ : Chủ đề cơ bản Nhận biết Thông hiểu...

Ngày tải lên: 04/09/2013, 19:10

... 2( 1 điểm) a) B. ) 32( 0,5 điểm b) C. 9 0,5 điểm Bài 3 (2 điểm) - Điền vào chỗ ( ) Mỗi ý điến đúng cho 0,5 điểm ) 324 32 2 + ) += 2 13 32 13 32 += 1 = Bài 4 (2 điểm) ( ) 5 32 2 =+ x 5 32 =+ x ... ( ) 2 23 có giá trị là ( ) 23 . A ( ) 32. B 1.C b) Nếu 3 49 = xx thì x bằng 3.A 5 9 .B 9. C Bài 3:( 2 iểm) Điền vào chỗ ( ) để đợc khẳng định đúng. ) 324 32 2 + ) += 2 3 ... căn thức 1 0,5 1 1 1 0.5 3 2 Hằng đẳng thức 2 A = A , 2 1 4 2 6 3 Biến đổi đơn giản các CTBH 1 0,5 1 2 2 2, 5 Rút gọn CTBH 1 2, 5 1 2, 5 5 3 5 4 2 3 12 10 D: Đề bài Bài 1(1 đ) Khoanh...

Ngày tải lên: 28/09/2013, 19:10

Ngày tải lên: 29/01/2015, 20:00

Ngày tải lên: 27/06/2015, 14:00

Ngày tải lên: 04/08/2013, 01:27

... THCS TT Bằng Lũng Ngày kiểm tra: / 4/ 20 09 KIểM TRA 45 Điểm Lời phê của Thầy, Cô giáo Môn: Đại số 8 Bài số 4 - Đề số I Đề bài I/ Phần trắc nghiệm khách quan ( 2 iểm ) Em hÃy khoanh tròn ... điểm cho 0 ,25 điểm Khi x < 0 . Ta có -4x = 2x + 12 ⇔ -4x - 2x = 12 ⇔ -6x = 12 ⇔ x = -2 < 0 thoả mÃn Vậy fơng trình đà cho cã 2 nghiÖm: S = { -2 ; 6} cho 0,5 điểm cho 0,5 điểm cho 0 ,25 điểm cho ... -8 x x 2 cho 0,5 điểm cho 0,5 điểm cho 0,5 điểm cho 0,5 điểm cho 0,5 điểm Câu 5( 3 điểm ): Giải fơng trình = 2x + 12 Khi x ≥ 0 . Ta cã 4x = 2x + 12 ⇔ 4x - 2x = 12 ⇔ 2x = 12 ⇔ x = 6 >...

Ngày tải lên: 06/07/2014, 00:01

... 4.7? ( 3 7 3 3 7 2 x x− + − ≤ 2 3 L  3⇔ − − ≤ +x x 2 2 L   ⇔ − − ≤ + x x 2   2 L⇔ − ≤ + +x x 32 ⇔ − ≤ x ⇔  32 −x 4.E? _>=()* +,% 32 −x  ... [*I \ ]"#G' ^4? 6"# 3 7 2  ? L E F [* 1 5 8 6 8 8 \\Q%#L 53 2   7 2 ?− >x 7 ? 2x ⇔ > + 7 Fx⇔ > ⇔  x > 4.E? _>=()* ... %&'()*+,+ -+,+" .$/0+1 2 $/0 +1 3$/0+10 2 4$51067 8& 9  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ 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$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ ...

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Ngày tải lên: 26/06/2015, 14:00

... 0 ,25 ñ b) 2 x 2 - 6 = 0 2 2 6 (0 ,25 d) x= 3 (0 ,25 d) x⇔ = ⇔ ± c ) 4x 2 –4x +1 = 0 2 2 4 ( 4) 4.4 0 (0 ,25 d)b ac= − = − − =V Giải ra x = 1 2 (0,5 đ) d ) 6 x 2 + x – 1 =0 2 2 4 1 +4.6.1 =25 ... hàm số đồng biến ,x>0 hàm số nghịch biến: 0 ,25 đ -Khi x = 0 thì hàm số đạt giá trị lớn nhất 0 ,25 đ Bài 2 ( 2, 5 điểm ) a) 2x 2 - 5x = 0 ⇔ (2 5) 0 0 ,25 dx x − = Giaûi ra x =0 ,x= 2, 5 0 ,25 ñ b) ... lập PT. 1 0,3đ 2 0,6đ 1 2 2 0,6 đ 2 3đ 8 6,5đ Định lý Vi-Ét 1 0,3đ 1 0,3đ 2 0,6đ Tổng điểm 3 0 ,9 4 1 ,2 2 4đ 3 0 ,9 2 3đ 14 câu 10 diểm I V -Đề kiểm tra: I- Trắc nghiệm...

Ngày tải lên: 03/08/2013, 01:27

Ngày tải lên: 26/10/2013, 06:11

... ≠ 0). (0 ,25 ñ) Vì A (2; 2) ∈ (d) neân : 2 a + b = 2 ⇒ b = 2 -2 a (1) (0 ,25 ñ) Vì B( -2; 3) ∈ (d) neân : -2a + b = 3 ⇒ b = 2a + 3 (2) (0 ,25 đ) Từ (1) và (2) suy ra: a = 1 4 − Vậy hệ số góc ... và B có dạng : y = ax + b ( a ≠ 0). (0 ,25 ñ) Vì A(1; 2) ∈ (d) neân : a + b = 2 ⇒ b = 2 - a (1) (0 ,25 ñ) Vì B( -2; 3) ∈ (d) neân : -2a + b = 3 ⇒ b = 2a + 3 (2) (0 ,25 đ) Từ (1) và (2) suy ... laøm: ……………………………………………………………………………………………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………………………………………………………………………………………. KIỂM TRA CHƯƠNG II – ĐẠI SỐ 9 I. Mục tiêu: - Kiểm tra hs kiến thức về hàm số bậc nhất: định nghóa, tính chất, đồ thị; đường thẳng song song, cắt nhau. - Kiểm tra kỹ năng vận...

Ngày tải lên: 05/11/2013, 11:11

... Hay 13 12m 0 m 13 12 c) (1.0đ): Theo định lí viét ta có : 1 2 1 2 3; 2x x x x + = = ( ) 2 2 2 1 2 1 2 1 2 2 9 4 5x x x x x x + = + = = Đề 2: Câu 1(3.0đ): a) (1.5đ): 2 45 46 0x ... có phơng trình 2 3 2 0x x + = Ta cã : a+b+c = 1 + (- 3) + 2 = 0 Phơng trình có hai nghiệm : 1 2 1; 2x x = = b) (1.5đ) : = 9 12m + 4 = 13 12m Để phơng trình (1) có 2 nghiệm phân biệt ... Phơng trình có hai nghiệm 1 1x = ; 2 46x = b) (1.5đ): 2 5 6 0x x+ + = Theo định lí viét ta có : 1 2 1 2 5; 6x x x x + = = Vậy phơng trình có hai nghiệm : 1 2 2; 3x x= = Câu 2 ( 3.0đ...

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