How was maths paper 3 for oct/nov 2013 session ?

[DumbIdiot]

Did people get the equation of the plane as something like 5x+4y+3z=15 ????? Please answer

i got 3x +2z -z = 1 or something


did u get i + 2j + 2k as the position vector of D

 

[RoOk1303]

I remember all the questions.

1. Gradient of the curve (3)
2. Logarithms + Modulus (5)
3. Integration by parts (4)
4. Parametric Equations (6)
5. Trigonometric Identities + Integration (7)
6. Iterative formula (8)
7. Partial fractions + Binomial Theorem (10)
8. Complex Numbers (10)
9. Vectors (11)
10. Differential Equations (11)

That totals up to 75 marks....but I'm not very sure about the marks distribution. But this is what I can kind of remember. Please post your answers question by question so we can compare

For ques 2, did you get 2 answers? One positive and one negative :s im not sure if i had to reject one..

 

[DumbIdiot]

For ques 2, did you get 2 answers? One positive and one negative :s im not sure if i had to reject one..

both answers were valid.

 

[saanya7]

How d

i got 3x +2z -z = 1 or something


did u get i + 2j + 2k as the position vector of D

How did you go about solving equation of the plane?

 

[RoOk1303]

For partial , i think i got -1,-1 and maybe 3 for values of A ,B and C :s

 

[DumbIdiot]

How d
How did you go about solving equation of the plane?

firstly i found AB and AC . then i worked out their cross product which i guess was, n= -9i -6j +3k

then r.n = a.n ( where a is A , B or C)

 

[RoOk1303]

firstly i found AB and AC . then i worked out their cross product which i guess was, n= -9i -6j +3k

then r.n = a.n ( where a is A , B or C)

Did the same thing

 

[DumbIdiot]

Did the same thing

and you got the equation =?

 

[saanya7]

and you got the equation =?

I did the same thing! But I don't know why our answers aren't matching Yours is probably correct though. I did mine in a REAL rush, so I think I must've made a mistake :/

 

[RoOk1303]

and you got the equation =?

Unfortunately i dont remember..but i know i made a mistake somewhere while using cross product.
Coz i got weird big numbers..but for D, i got the same answer as yours.

 

[saanya7]

I didn't even attempt the other qs in vectors. Left out the complex nos also. I'm soo screwed and I have an A in AS Math. All to waste

 

[RoOk1303]

I didn't even attempt the other qs in vectors. Left out the complex nos also. I'm soo screwed and I have an A in AS Math. All to waste

I couldnt understand the second part of the question for complex number :s i just made a circle with radius 1 centre -i i think..i attempted to solve the arg , but i got confused..so i just left that part
Well , i also couldnt show the ppd. Distance of D to the line :/
I practised papers from 2007-m/j 2013 .
All i can say is,
O/N 2013 is actually the toughest ( according to me ) .
I think ill get around only 40 marks for this paper..

 

[DumbIdiot]

i wonder who found the paper easy . actually it wasnt all that bad, to me only the time provided was a negative factor.

 

[RoOk1303]

i wonder who found the paper easy . actually it wasnt all that bad, to me only the time provided was a negative factor.

A girl happily said it was really easy when the papers were handed over to the supervisors at my centre.
And i just stared at her .

 

[urvi kapoor]

What was A B C in partial fractions

 

[Ujjwal Basnet]

For integration I got 4ln(something) -4
For iterative I got 0.93
For complex I got 1+2i and -2-4i
for binomial I got something +17/72 x^2
and lastly for differential I got 49.4

i got same for iterative and complex number and binomial but for differential i got in terms oh H

 

[Ujjwal Basnet]

i got 3x +2z -z = 1 or something


did u get i + 2j + 2k as the position vector of D

did u get i + 2j + 2k as the position vector of D[/quote]
Got the same for D matebt for eqn of plane i got 3x+2y-2z=7.were u able to prove the perpendicular disatnce from OD to A? I got 1/3(11^1/2) instead of 63^1\2

 

[Ujjwal Basnet]

For partial , i think i got -1,-1 and maybe 3 for values of A ,B and C :s

i got 1,3 and -1

 

[Ujjwal Basnet]

Guys with all the confusion i have and the qstns i have left i think i will get about 45 to 50 marks is it going to be enough to score an A or a B?

 

[RoOk1303]

Guys with all the confusion i have and the qstns i have left i think i will get about 45 to 50 marks is it going to be enough to score an A or a B?

If the gt is low , then yes . Dont worry