Maths, Addmaths and Statistics: Post your doubts here!

[M.Omar]

yeah but IF the range was given THEN we ignored it and THEN it does qualify as a mistake
the range is there for some reason

Yar wht did u get for first part and for 2nd part ....wht was it exactly abt tanx or sin^2x or wht

 

[Dark Destination]

in the strt where they detail abt meaning of M1 and B2 e.t.c

That's not in all marking schemes.

 

[Faizan Muhammmad]

But the required answer is there In the working space. It is present in the space.. and the examiner will see it. And the requirement of the question will be fulfilled.

You are saying, the examiner is going to cut a mark for something extra?
Even though i solved all the steps. did the question perfectly, just didn't write ''rejected''?

tu nay konsa jan k chora hai
bhool gaya likhna

 

[M.Omar]

look one's range was 0-180 anothers 0-360, I am damn sure
since for tan we have 3 values within 0-180 so it must be that one
the sin2 one must be the one with 0-360

was it sin2x or sinx?

 

[Dark Destination]

Yar wht did u get for first part and for 2nd part ....wht was it exactly abt tanx or sin^2x or wht

The exact question was

2cos^2y + sin y = 1

Range : 0 to 180

This is it!

Now, that gives 270 as an answer.

What if i don't write ''REJECTED'' with 270?

They'll cut a whole mark, even though the entire working, steps everything is correct. Even though the answers they require are present in the working space?

 

[M.Omar]

That's not in all marking schemes.

Do i even need to reply to this....

 

[Dark Destination]

was it sin2x or sinx?

Weren't the answers to the first question in decimals?

 

[Faizan Muhammmad]

was it sin2x or sinx?

square I THINK , not sure :/

 

[M.Omar]

The exact question was

2cos^2y + sin y = 1

Range : 0 to 180

This is it!

Now, that gives 270 as an answer.

What if i don't write ''REJECTED'' with 270?

They'll cut a whole mark, even though the entire working, steps everything is correct. Even though the answers they require are present in the working space?

first part or 2nd

 

[M.Omar]

square I THINK , not sure :/

am not talking abt square but coefficient of x was their coefficient of x like as 2x or simply x?

 

[M.Omar]

Weren't the answers to the first question in decimals?

0,101.3,180 tht,s it

 

[Faizan Muhammmad]

am not talking abt square but coefficient of x was their coefficient of x like as 2x or simply x?

x only , 75% surity

 

[Dark Destination]

0,101.3,180 tht,s it

What was the rejected answer then?

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

how does it lead to those answers? :/

 

[M.Omar]

x only , 75% surity

then in this case i know for sure tht stated in question was 0<=x<=180
the only reason i cud think of range 0 to 360 was if there was 2x which is infact not...so range retains as 180 or below....and only 2 sol of part 2

 

[Dark Destination]

then in this case i know for sure tht stated in question was 0<=x<=180
the only reason i cud think of range 0 to 360 was if there was 2x which is infact not...so range retains as 180 or below....and only 2 sol of part 2

First one -- 0 to 180
Second one - 0 to 360

 

[M.Omar]

What was the rejected answer then?

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

how does it lead to those answers? :/

so wht was 2nd part ...c,mon just bring out those faint words frm ur memory cells or whtever

 

[M.Omar]

First one -- 0 to 180
Second one - 0 to 360

no in question it was stated 0 to 180
and if there was 2x then effective range was 0 to 360
one more thing for last question range was: 0 to pie rad right?

 

[Dark Destination]

no in question it was stated 0 to 180
and if there was 2x then effective range was 0 to 360
one more thing for last question range was: 0 to pie rad right?

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.

 

[Faizan Muhammmad]

yarr its all too stupid we are just wasting time
1 mark hai bas, logon ka poora poora relative velocity ghalat hai

 

[Faizan Muhammmad]

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.

101.3 is an ans of tan one