Question Number | Scheme | Marks |
1. | ||
(a) | or better | M1 |
or 0.5 (ignore ) | A1 | |
(2) | ||
(b) | or or equivalent | M1 |
or 16 | A1 cao | |
(2) | ||
4 | ||
2. | M1A1,A1,A1 | |
= | A1 | |
5 | ||
3. | M1 | |
denominator of 2 | A1 | |
Numerator = | M1 | |
So | A1 | |
4 | ||
Alternative: , and form simultaneous equations in p and q | M1 | |
–p + 3q = 5 and p - q = –2 | A1 | |
Solve simultaneous equations to give p = . | M1 A1 | |
Question Number | Scheme | Marks | |
4. (a) | B1 | ||
soa | (1) | ||
(b) | (= 18 - 4c) | M1 | |
M1 | |||
“” = 0 | A1ft | ||
So c = 5.2 | A1 o.a.e | ||
(4) | |||
5 | |||
5. | |||
(a) | Correct shape with a single crossing of each axis | B1 | |
y=1 | |||
y = 1 labelled or stated | B1 | ||
x=3 x = 3 labelled or stated | B1 | ||
(3) | |||
(b) | Horizontal translation so crosses the x-axis at (1, 0) | B1 | |
New equation is | M1 | ||
When x = 0 y = | M1 | ||
A1 | |||
(4) | |||
7 | |||
6. | |||
(a) | or | M1 | |
162 = 10a + 45d * | A1cso | ||
(2) | |||
(b) | B1 | ||
(1) | |||
M1 | |||
(a) is 10a + 45d = 162 | |||
Subtract 5d = 8 so d = 1.6 o.e. | A1 | ||
Solving for a a = 17 - 5d | M1 | ||
so a = 9 | A1 | ||
(4) | |||
7 | |||
Question Number | Scheme | Marks | |
7. | M1 A1 A1 | ||
M1 | |||
c = 9 | A1 | ||
5 | |||
8 . | |||
(a) | M1 | ||
or better | M1 | ||
* | A1cso | ||
(3) | |||
(b) | M1 | ||
Critical values are k = 1 or -3 | A1 | ||
(choosing “outside” region) | M1 | ||
k > 1 or k < -3 | A1 cao | ||
(4) | |||
7 | |||
9. | |||
(a) | so k = 5 | B1 | |
(1) | |||
(b) | M1 | ||
o.e. | A1 | ||
(2) | |||
(c) | Perpendicular gradient = | B1ft | |
Equation of line is: | M1A1ft | ||
o.e. | A1 | ||
(4) | |||
(d) | or x = 7 | M1A1ft | |
(2) | |||
(e) | M1 | ||
A1 | |||
(2) | |||
11 | |||
Question Number | Scheme | Marks |
10. | ||
(a) | (i) correct shape ( -ve cubic) | B1 |
Crossing at (-2, 0) | B1 | |
Through the origin | B1 | |
Crossing at (3,0) | B1 | |
(ii) 2 branches in correct quadrants not crossing axes | B1 | |
One intersection with cubic on each branch | ||
B1 | ||
(6) | ||
(b) | “2” solutions | B1ft |
Since only “2” intersections | dB1ft | |
(2) | ||
8 | ||
11. | ||
(a) | M1A1A1A1 | |
(4) | ||
版权声明:本站内容均来自互联网,仅供演示用,请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系QQ:729038198,我们将在24小时内删除。
发表评论