Maths, Addmaths and Statistics: Post your doubts here!

[funky brat]

quadratic sequences means? n usmei d1 and d2 mei kia ata? :'(

di= 1st common difference
d2 second c.d
see like, 1,3,7,13
1st c.d= 2,4,6
2nd c.d= 2

 

[peacce]

di= 1st common difference
d2 second c.d
see like, 1,3,7,13
1st c.d= 2,4,6
2nd c.d= 2

1 d.f mei phir lenge kaunsa? 2 ya 4 ya 6?

 

[funky brat]

1 d.f mei phir lenge kaunsa? 2 ya 4 ya 6?

Lol, pata nahi.
I don't use this formula.

 

[peacce]

????

 

[peacce]

Lol, pata nahi.
I don't use this formula.

jsko pta hy btadeeeeeeeeeeeeeeeeeeeeey

 

[peacce]

c is d1 - d2
d1 = Second Term - First Term
d2 = Third Term - Second Term
That d is d1.

cn u quote some e.g?

 

[peacce]

 

[Dark Destination]

How exactly to draw a graph? Do we use crosses or points or what? :/

 

[era30amy]

Do we have to write every answer correct to 3 sif figures? :O

 

[era30amy]

See question. If any value in question has different sf you have to write to that. Like in money questions they give 2 dp and in trig sometimes they say give answer to 3 dp (Examiner report tells working should contain 5 dp)

One more thing. If value of pi is not given, are we going to take it as 22/7 or 3.142?

 

[Dark Destination]

What was the answer to the last part of Histogram question? I wrote 40.5 and people are saying it should be 40.

 

[Dark Destination]

I wrote 41. It was either 40 or 41. I didn't have the time atm (first time ever I lost out on time management). How can there be 40.5 people?

But the answer to that part was 16.5 + 24..
Why not give the exact estimate?
I had a feeling we had to round up or down, but i thought it would make the estimate inaccurate or something.

This is what i did:

 

[Dark Destination]

That was one mark. It's not important. Ye to btao frequency density thi ya normal frequency. :/

That was the only mark i lost in both papers, so hell yeah its important!

 

[Abdul Hanan]

normal frequency histogram right?

 

[Awesome12]

Did anyone who solved the last question notice the trick played by CIE?

 

[Abdul Hanan]

Did anyone who solved the last question notice the trick played by CIE?

what trick !!!

 

[Awesome12]

what trick !!!

What? I got only AEB wrong there.

They shaded the minor segment and told us to find the area of the Major segment.
So it was 360 - (130 ...)

Candidates who solved such questions before thought they were supposed to find the area of the shaded segment

 

[Awesome12]

That's no trick lol. They clearly mentioned in BOLD that we should find area of unshaded part.

I know but it was alos for 3 marks
So people in a jiffy found the area of the arc (1 mark), subtracted the area of the triangle from it (1 mark), and then the answer (1 mark)
I too was about to do the same, but Alhamdulillah, I did not

 

[funky brat]

What was the answer to the last part of Histogram question? I wrote 40.5 and people are saying it should be 40.

I wrote 41. It can't be in decimals.

 

[Awesome12]

Good. Now onto the important question.

FREQUENCY DENSITY OR ONLY FREQUENCY?

Frequency density ofcourse. There were irregular intervals

How Awesome12 thought we will react:

How we actually reacted:

Something tells me you are a dean ambrose fan