Maths, Addmaths and Statistics: Post your doubts here!

[Dark Destination]

101.3 is an ans of tan one

So are you sure the first part was about tan? Mine was about SINE :/

Wasn't this the question: 2cos^y + sin y = 1 ?

This was the first part, i am sure.

 

[M.Omar]

Yes, but i don't remember any 2x :/

That was there in the second part maybe.

The first question was in terms of sine. How did you get 101.3? I think that's wrong.

Tht,s wht i am saying ...if u cud just remmebr the exact question for both 2 parts then it will be done and dusted.....coz i cant remmeber

 

[Dark Destination]

Tht,s wht i am saying ...if u cud just remmebr the exact question for both 2 parts then it will be done and dusted.....coz i cant remmeber

The first part was: 2cos^y + sin y = 1

Are you sure your first part was in TAN? How is this tan?

 

[M.Omar]

The first part was: 2cos^y + sin y = 1

Are you sure your first part was in TAN? How is this tan?

I aint saying anything for sure now ....just jog up ur memory cells and see wht the 2nd part was according to u

 

[Dark Destination]

I aint saying anything for sure now ....just jog up ur memory cells and see wht the 2nd part was according to u

Everyone is saying tan was first part :/ It wasn't.

Okay, i'm trying to remember, but marks are cut for stating an additional angle, and not writing rejected? :/

 

[M.Omar]

Everyone is saying tan was first part :/ It wasn't.

Okay, i'm trying to remember, but marks are cut for stating an additional angle, and not writing rejected? :/

Yes

 

[Dark Destination]

Yes

Question in November 2013:


Marking Scheme:


They said A1 for each correct solution.

Apart from these two, there were other solutions, but not in the range. Doesn't the presence of these two required solutions mean full marks?

 

[M.Omar]

Question in November 2013:
View attachment 45279

Marking Scheme:
View attachment 45278

They said A1 for each correct solution.

Apart from these two, there were other solutions, but not in the range. Doesn't the presence of these two required solutions mean full marks?

but if u write extra then A1 marks tht is ACCURACY marks will not be observed and accordingly one deducted per xtra

 

[M.Omar]

Question in November 2013:
View attachment 45279

Marking Scheme:
View attachment 45278

They said A1 for each correct solution.

Apart from these two, there were other solutions, but not in the range. Doesn't the presence of these two required solutions mean full marks?

rememebr anything abt part 2?

 

[Dark Destination]

but if u write extra then A1 marks tht is ACCURACY marks will not be observed and accordingly one deducted per xtra

Who told you this? :/

 

[Dark Destination]

rememebr anything abt part 2?

No

 

[M.Omar]

Who told you this? :/

well the MS details and logical deduction i guess

 

[Dark Destination]

well the MS details and logical deduction i guess

I can't a marking scheme with those details :/

But maybe examiners have different rules.

 

[Faizan Muhammmad]

I MAY be right :
tan^2 x - 5 tanx =0 for 0-360 ?

 

[Ram97]

I MAY be right :
tan^2 x - 5 tanx =0 for 0-360 ?

Nope the range was 0-180

 

[M.Omar]

I can't a marking scheme with those details :/

But maybe examiners have different rules.

Ok confirmed for the second part rnage was frm 0 to 360
yes the range was frm 0 to 360 but since one value of sin was rej coz it was out of its range ...the other was positive value and thus sin wud lie in first or second quadrant
and effectively range was 0 to 180.Perhaps I was mixing this earlier but its confirmed now tand thus the only values were:sinx=0.5
x=30 ,150 exclusivel...no more and no less for this second part....Yes the second part
First was of tan as faizan said and for tht range was 0 to 180

 

[M.Omar]

Nope the range was 0-180

How did today,s ppr go ?
Some tricky questions but rest was standard for me...
Wht did u get for b and A in str line graph question abt ln.

 

[Ram97]

How did today,s ppr go ?
Some tricky questions but rest was standard for me...
Wht did u get for b and A in str line graph question abt ln.

Paper went good....
b=4
A=0.5

 

[Ram97]

If we made the equation in the first part using lg would marks be deducted???
It just asked to form the equation and both lg and ln give same answers

 

[M.Omar]

If we made the equation in the first part using lg would marks be deducted???
It just asked to form the equation and both lg and ln give same answers

for the first part..no prob.