AFTER 24 hr .. P1 discussion here !

[AdeelRox]

I did the same thing as you
I don't think zero is a domain. Cuz range was >=1, it would reach close to zero but not zero as such.

Exactly zero was not the domain of f^-1(x) thats why it was 0<x<=-2.5 rather than 0<=x<=-2.5
I am disappointed for doing such a foolish mistake by by forgetting that 0 inequality and writing instead x<=-2.5.

 

[AdeelRox]

Wasnt it tan inverse of -7 ??

yes it was tan^-1(-7) , so the basic angle was 89.1, since tan is negative in 2nd and fouth quadrants, therefore subtracting 89.1 from 180 and 360 to get the angles, 98.1 and 278.1

 

[Lostsoul]

If you score 50, chances for A are gone?
How about if score 30 in Mechanics.. Then how do things workout? A?

 

[AdeelRox]

Nicee wat do u expect the gt to be ??

I guess the GT will be like 57-58 cux the paper was hard for many I dont have any concerns with Gt the only concern I have is to get the A* in accel maths

 

[mania _ manal]

Wat do u predict the gt to be ?

 

[AdeelRox]

Alright guys, since 24 hours are up, these are some of the answers I remember of mine (Paper 12)
2(i) co-efficent of x^2 was either 64 or 60 (cant remember exactly)
(ii) coefficent was 124
3 m= -3 and P = (2,8)
4 (ii) Perimeter=20.4
(iii) 7.96 Area of shaded region
5 (i) [a^2 +b^2] The constant was being proved to be 10
(ii) 116.6 and 296.6
7 R(7,15)
10 (i) 25 terms
(ii) -21 and 63
11 (i) y=-0.5x+1
(ii) 7/6

Note=I am not saying any of these answers are correct but this is what I wrote. Please tell me which I got correct or wrong.

Dude I am not sure whether I am right but I guess the perimeter in 4 (ii) was 23.4 in my case, one of my friends told me that it was 20 as well, how did u got 20 can u plx explain

 

[mania _ manal]

Wat if we wrote fr tan inverse of 7 all the fr values will we loose marks ??

 

[AdeelRox]

what was the perimeter in 4 part (ii)? thanks in advance

 

[AdeelRox]

Wat if we wrote fr tan inverse of 7 all the fr values will we loose marks ??

you mite get 1 mark for getting the basic angle correct

 

[mania _ manal]

But i also included the other angle for the - ve sign along with the positive ?

 

[Zuhair Rayyes]

what was the perimeter in 4 part (ii)? thanks in advance

angle was 0.9273
radius was 11.18
each side of the square was 10 cm,
radius x angle + side = 11.18 x 0.9273 + 10 = 20.36

 

[Beaconite007]

If you score 50, chances for A are gone?
How about if score 30 in Mechanics.. Then how do things workout? A?

Chances are slim.
Mechanics thresholds are usually high.
But then again, it depends on the paper

 

[mania _ manal]

Any1 ??

 

[Lostsoul]

Chances are slim.
Mechanics thresholds are usually high.
But then again, it depends on the paper

So having a 50 in p1 and 30 m1 get me an A or?

 

[Beaconite007]

So having a 50 in p1 and 30 m1 get me an A or?

No, I'm afraid.
Thresholds don't go that low.
Not for maths, at least.

 

[Zuhair Rayyes]

Any1 ??

if you got both positives right but also included the negative angle as a value of x, you might just lose one mark

 

[mania _ manal]

Thnkss probably the threshold will be 60 fr an A :s

 

[Lostsoul]

No, I'm afraid.
Thresholds don't go that low.
Not for maths, at least.

Okay :sob: Thanks though

 

[AdeelRox]

angle was 0.9273
radius was 11.18
each side of the square was 10 cm,
radius x angle + side = 11.18 x 0.9273 + 10 = 20.36

do you remember how much marks did that question carried?

 

[Zuhair Rayyes]

do you remember how much marks did that question carried?

nope, sry