AQA Core 3 - Tuesday 10th June 2014 (AM) - Official Thread

No actually that makes a lot of sense so basically I just change all the negative x values back to positive and THEN stick them back into the equation. Thanks :biggrin:

Yes from my understanding however if the question was asking you to do modulus of f (x) and not modulus of (x) then you just reflect the negative part of the graph in the positive part....

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Reply 81

john821

2

Original post by chloetheuincorn

I do this fun thing sometimes when I integrate and differentiate at the same time. It's so great. :s-smilie:

Would be great if this came up!

Reply 82

lukejohnston13

Do we need to know about obtuse and acute angles at all for Core 3? Because they confuse me

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Reply 83

Thephonehut11

Original post by lukejohnston13

Do we need to know about obtuse and acute angles at all for Core 3? Because they confuse me

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That's core 4

Reply 84

ally9623

can anyone help me on the order of transformations! i always get confused :confused:

thanks

Reply 85

harsh.boy365

Guys whats the hardest paper you've come across. I've been busy revising for chemistry so now need to do some maths. Please help me!

Reply 86

Tomasz

Original post by harsh.boy365

Guys whats the hardest paper you've come across. I've been busy revising for chemistry so now need to do some maths. Please help me!

Hi, every paper has some tricky question I personally am going through the recent papers, if you want you can check the grade boundaries to see which one was a tough one.
Aqa has a website where you can convert raw marks to ums converter you can have a look at the grade boundries on there. Hope this helps. By the way did you OCR F334 chemistry paper?

(edited 9 years ago)

Reply 87

prettyugly

7

How's everyone feeling for tomorrow? I feel prepared, but let's see what AQA throw at us >_<

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Reply 88

SaxoJack

If AQA follow OCR after todays F324 paper then we aren't in for much fun...

Reply 89

Hopkirk

Original post by ally9623

can anyone help me on the order of transformations! i always get confused :confused:

thanks

The way to think of it is to consider what you are doing with x. You are replacing the x in the previous thing with a new value for x each time.

Eg- y=sinx
If you do a translate of -3 in the x direction you get y=sin(x+3).
If you then do a sketch parallel to the x axis scale factor 2 then you replace just the x with x/2 thus y=sin(x/2+3)

Or y=cosecx onto y=cosex(2x+30)
There's two ways but this is what i did:
Start with y=cosec x.
To get to cosec2x it's a translation (-30,0) (with the vector brackets)
That gives cosec(x+30)
Now to get x+30 with 2x+30 you replace x with x/(1/2) which makes a stretch parallel to the y axis scale factor of 1/2.

Reply 90

Tomasz

Original post by SaxoJack

If AQA follow OCR after todays F324 paper then we aren't in for much fun...

I agree I did OCR's F334 chemistry exam, and it was very hard. I am expecting the worst.

Reply 91

harsh.boy365

I gave up now, i know what i'm doing but making soo many silly mistakes missing the a* by a few marks. I need to get to bed soon and should be fine once I'm relaxed - i hope.

I did Edexcel 6CH04 - HORRIBLE PAPER lol

Original post by Tomasz

Hi, every paper has some tricky question I personally am going through the recent papers, if you want you can check the grade boundaries to see which one was a tough one.
Aqa has a website where you can convert raw marks to ums converter you can have a look at the grade boundries on there. Hope this helps. By the way did you OCR F334 chemistry paper?

Reply 92

SaxoJack

Original post by Tomasz

I agree I did OCR's F334 chemistry exam, and it was very hard. I am expecting the worst.

How DARE they pull ozone on us again. I recon maths will be nicer...

Reply 93

Tomasz

Original post by harsh.boy365

I gave up now, i know what i'm doing but making soo many silly mistakes missing the a* by a few marks. I need to get to bed soon and should be fine once I'm relaxed - i hope.

I did Edexcel 6CH04 - HORRIBLE PAPER lol

Good night sleep before the exam is probably best. As to the little mistakes I know what you mean, I do too many of them :angry:

. Anyway good luck for tomorrow everyone.

Reply 94

john821

2

Hey guys, I keep missing out on the A* by a few marks in the past paper purely because of stupid mistakes. Would people recommend that I take the exam slowly or that I go fast and have lots of time to check over?

Reply 95

furryface12

21

Original post by john821

Hey guys, I keep missing out on the A* by a few marks in the past paper purely because of stupid mistakes. Would people recommend that I take the exam slowly or that I go fast and have lots of time to check over?

I do this, I'd say go slowly and try and check as much as possible as you go along, even if it's just things like checking the number of significant figures it asks for or doing the integration on your calculator (if yours does that). That said, obviously don't go too slowly or you might not finish! :redface:

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Reply 96

john821

2

Original post by furryface12

I do this, I'd say go slowly and try and check as much as possible as you go along, even if it's just things like checking the number of significant figures it asks for or doing the integration on your calculator (if yours does that). That said, obviously don't go too slowly or you might not finish! :redface:

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Hmm yeh I think I'll do this as I tend to finish my past papers within 50 minutes so I definitely have a bit of room to go slower.