KIEM TRA DS CHUONG 3 (DUNG DUOC
Chia sẻ bởi Trương Thị Thu Hiền |
Ngày 13/10/2018 |
37
Chia sẻ tài liệu: KIEM TRA DS CHUONG 3 (DUNG DUOC thuộc Đại số 9
Nội dung tài liệu:
Họ và tên: ……………………………………………
Lớp 9/2
KIỂM TRA MỘT TIẾT CHƯƠNG IV
MÔN: ĐẠI SỐ 9
Ngày kiểm tra: 09.04.2012
Điểm
Bài 1. Giải các phương trình sau
a. x2 + 6x + 8 = 0 b. c) x2 + 3x - 10 = 0 c. 4x2 – 9 = 0
Bài 2. Cho hàm số y = -x2 (P) và hàm số y = 2x – 3 (d)
Vẽ đồ thị hai hàm số trên cùng mặt phẳng tọa độ OXY
Xác định tọa độ giao điểm của (P)và (d)
Bài 3. Cho phương trình x2 + 6x – 7 = 0. Không giải phương trình hãy tính tổng 2 nghiệm x1+ x2 và tích 2 nghiệm x1.x2
Bài 4. Cho phương trình x2 - 2mx + 2m - 1 = 0
Chứng tỏ phương trình luôn có nghiệm x1 , x2 với mọi m.
b. Tìm m để 2 nghiệm x1 , x2 của phương trình thỏa mãn hệ thức x12 + x22 = 5
BÀI LÀM
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MA TRẬN ĐỀ KIỂM TRA CHƯƠNG IV
MÔN : ĐẠI SỐ HỌC LỚP 9
Cấp độ
Chủ đề
Nhận biêt
Thông hiểu
Vận dung
Cộng
Cấp độ Thấp
Cấp độ Cao
TNKQ
TL
TNKQ
TL
TNKQ
TL
TNKQ
TL
Chủ đề 1:
Tính chất và đồ thị hàm số y=ax2 (a ≠ 0)
vẽ đồ thị hàm số và tìm tọa độ giao điểm
Số câu hỏi
Số điểm
Tỉ lệ %
2
3
30%
2
3
30%
Chủ đề 2:
Công thức nghiệm tổng quát và công thức nghiệm thu gọn
giải các dạng PT bậc hai
giải phương trình chứa tham số m khi biết giá trị của m. Cm pt có nghiệm với mọi m
Số câu hỏi
Số điểm
Tỉ lệ %
3
3
30%
1
1,5
15%
4
4,5
45%
Chủ đề 3:
Hệ thức Vi-et và ứng dụng
Biết tìm nghiệm của PT bậc hai
giải phương trình chứa tham số m khi biết giá trị của m. Tìm m để 2 nghiêm của pt thỏa mãn hệ thức T cho trước
Số câu hỏi
Số điểm
Tỉ lệ %
1
1,5
15%
1
1
10%
2
2,5
25%
Tổng số câu
Tổng số điểm
Tỉ lệ %
1
1,5
15%
5
6
60%
2
2,5
,25%
8
10
100%
HƯỚNG DẪN CHẤM
Bài 1: Giải đúng mỗi câu 1 điểm
a. x2 + 6x + 8 = 0 b. c) x2 + 3x - 10 = 0 c. 4x2 – 9 = 0
x1= -2, x2 = -4 x1= 2, x2 = -5 x1= -3/2, x2 = 3/2
Bài 2. a.Vẽ đúng đồ thi mỗi hàm số 1 điểm
Phương trình hoành độ : - x2 -2x +3 = 0
X1 = 1. Suy ra y1= -1
x2 = -3. Suy ra y1= -9 (1 điểm)
Bài 3. x2 + 6x – 7 = 0.∆ =
Lớp 9/2
KIỂM TRA MỘT TIẾT CHƯƠNG IV
MÔN: ĐẠI SỐ 9
Ngày kiểm tra: 09.04.2012
Điểm
Bài 1. Giải các phương trình sau
a. x2 + 6x + 8 = 0 b. c) x2 + 3x - 10 = 0 c. 4x2 – 9 = 0
Bài 2. Cho hàm số y = -x2 (P) và hàm số y = 2x – 3 (d)
Vẽ đồ thị hai hàm số trên cùng mặt phẳng tọa độ OXY
Xác định tọa độ giao điểm của (P)và (d)
Bài 3. Cho phương trình x2 + 6x – 7 = 0. Không giải phương trình hãy tính tổng 2 nghiệm x1+ x2 và tích 2 nghiệm x1.x2
Bài 4. Cho phương trình x2 - 2mx + 2m - 1 = 0
Chứng tỏ phương trình luôn có nghiệm x1 , x2 với mọi m.
b. Tìm m để 2 nghiệm x1 , x2 của phương trình thỏa mãn hệ thức x12 + x22 = 5
BÀI LÀM
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MA TRẬN ĐỀ KIỂM TRA CHƯƠNG IV
MÔN : ĐẠI SỐ HỌC LỚP 9
Cấp độ
Chủ đề
Nhận biêt
Thông hiểu
Vận dung
Cộng
Cấp độ Thấp
Cấp độ Cao
TNKQ
TL
TNKQ
TL
TNKQ
TL
TNKQ
TL
Chủ đề 1:
Tính chất và đồ thị hàm số y=ax2 (a ≠ 0)
vẽ đồ thị hàm số và tìm tọa độ giao điểm
Số câu hỏi
Số điểm
Tỉ lệ %
2
3
30%
2
3
30%
Chủ đề 2:
Công thức nghiệm tổng quát và công thức nghiệm thu gọn
giải các dạng PT bậc hai
giải phương trình chứa tham số m khi biết giá trị của m. Cm pt có nghiệm với mọi m
Số câu hỏi
Số điểm
Tỉ lệ %
3
3
30%
1
1,5
15%
4
4,5
45%
Chủ đề 3:
Hệ thức Vi-et và ứng dụng
Biết tìm nghiệm của PT bậc hai
giải phương trình chứa tham số m khi biết giá trị của m. Tìm m để 2 nghiêm của pt thỏa mãn hệ thức T cho trước
Số câu hỏi
Số điểm
Tỉ lệ %
1
1,5
15%
1
1
10%
2
2,5
25%
Tổng số câu
Tổng số điểm
Tỉ lệ %
1
1,5
15%
5
6
60%
2
2,5
,25%
8
10
100%
HƯỚNG DẪN CHẤM
Bài 1: Giải đúng mỗi câu 1 điểm
a. x2 + 6x + 8 = 0 b. c) x2 + 3x - 10 = 0 c. 4x2 – 9 = 0
x1= -2, x2 = -4 x1= 2, x2 = -5 x1= -3/2, x2 = 3/2
Bài 2. a.Vẽ đúng đồ thi mỗi hàm số 1 điểm
Phương trình hoành độ : - x2 -2x +3 = 0
X1 = 1. Suy ra y1= -1
x2 = -3. Suy ra y1= -9 (1 điểm)
Bài 3. x2 + 6x – 7 = 0.∆ =
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