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where have i gone wrong? (integration) watch

1. hi guys

i can't really see what i've done wrong in this question, although then again i know that i have major gaps in my mathematical knowledge too

the correct answer is D) 3/2a^4, but i got A.

thank you in advance

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2. (Original post by ashaxo99)
hi guys

i can't really see what i've done wrong in this question, although then again i know that i have major gaps in my mathematical knowledge too

the correct answer is D) 3/2a^4, but i got A.

thank you in advance

Attachment 699238699240
the trouble is that part of the curve is below the x axis, and part above, so you have to do two separate integrations.
3. You need to work out the area below and above the line from the x axis and add their magnitudes, I'd recommend drawing the graph
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4. I recognise this, for the ECAA isn't it! I'm doing it too
Eeeek
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5. (Original post by the bear)
the trouble is that part of the curve is below the x axis, and part above, so you have to do two separate integrations.
thank you
6. (Original post by BDunlop)
You need to work out the area below and above the line from the x axis and add their magnitudes, I'd recommend drawing the graph
(Original post by BDunlop)
I recognise this, for the ECAA isn't it! I'm doing it too
Eeeek
thank you so much!

and yuh-huh, it's from the ECAA alright how do you feel about it? best of luck for thursday!
7. (Original post by ashaxo99)
thank you so much!

and yuh-huh, it's from the ECAA alright how do you feel about it? best of luck for thursday!
Well, I'm not very confident at all for the writing side of things, hbu?
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8. (Original post by BDunlop)
Well, I'm not very confident at all for the writing side of things, hbu?
i've tried writing a couple essays and they've gone okayish i guess! i'm not too confident for it either though, to be honest. i'm hoping it's a really good text. i may practise a couple more times before thursday, just so i can approach the section with a better mood on the day
9. (Original post by ashaxo99)
i've tried writing a couple essays and they've gone okayish i guess! i'm not too confident for it either though, to be honest. i'm hoping it's a really good text. i may practise a couple more times before thursday, just so i can approach the section with a better mood on the day
I don't do any essay subjects, so I guess I'm slightly out of practice you could say! Shall be doing some sort of preparation... I've already done A2 maths and got an A* but sadly all they test is c1/c2 oh well, what were your as modules like?
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10. (Original post by BDunlop)
I don't do any essay subjects, so I guess I'm slightly out of practice you could say! Shall be doing some sort of preparation... I've already done A2 maths and got an A* but sadly all they test is c1/c2 oh well, what were your as modules like?
an A* in maths is fab! i'm sure the C1 and C2 in the exam will be good to you then!

i'm like, barely competition at all! my AS modules for maths were terrible, my average ums is only 86. my c1 went super well but i only just about scraped an A in C2 and S1. plus, i don't even do further maths, unfortunately. my college didn't let me take on 4 a-levels because they thought my gcse grades were too *****y. i kinda agree with them (3 A*s, 5 As, 1 B, and a lovely lil E). i have a ton of extenuating circumstance stuff going on with my gcses and AS which has contributed to this kinda disgusting under-performance, though. but that's why i'm really hoping to do well in the ECAA!

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