Maths paper 12 ???

[kitkat <3 :P]

:'( i dont think m even gonna pass :'(

 

[kitkat <3 :P]

Batguy

 

[Batguy]

cos(theta)=k
sin(theta)= under root (1-k^2)
tan(theta)=under root (1-k^2)/k .so why negative ???

man ur answer gave me heart attack i didnt noticed square root written -_______________-

 

[Batguy]

inverse of g(x)??

 

[Snowysangel]

AS MATHS P1. MAY 2014. ANSWERS
1, (3.5, 0).

2, -145

3, (i) -root (1-k^2).
(ii) - root (1-k^2)/k
(iii) Theeta is reflex and lies in between 270-360.
Hence, 2 Theeta lies in between 540-720, which is 7th and 8th quadrant (3rd and 4th corresponding).
Since sin is always negative in 3rd and 4th quadrant, the value of sin 2 Theeta will be negative for 0<k<1.

4, (i) p = 2
(ii) Perimeter = 34.1 cm

5, (ii) 116.6 deg. and 296.6 deg.

6, (i) r = 1.5
(ii) For G.P, T4 = 27.
For A.P, T4 = 9.5

7, (ii) 12i + 9j - 2k (in cartesian form).

8, Maximum point is (-2, 10 5/6) or (-2, 10.83).

9, (ii) y = x/2 + 11/2
(iii) Area = 7/12 or 0.583 units^2.

10, (i) x = 5
(ii) g(x) >= -4
(iii) x < -6 or x >2
(iv) p = -4
(v) -2
(vi) h(x) = root(x + 4) - 2, for x >= -4.

Didn't it ask for the range of h(x) and not h-1(x)...so wont it be -2?

 

[Ben Callum]

So what you guys think the threshold would be my paper didnt went that well as i excepted bascially in my place Many students didnt do AP AND GP PART ,vectors part and messed up that q3

 

[Jassim]

It may be repeated. The paper has been leaked already. I have a picture of the Maths P1 paper, which I know is not allowed just less that a week after the exam ends. It was probably leaked before, although no one is willing to talk. Whats more worrying is that it was possibly distributed, as the paper looks like it MAY have also been a photocopy of the original. Any idea what might happen now?