AQA Core 2 Maths prep. thread (25/05/16)

thanks man, kidna nervous, getting 70's in past papers but always feel like i mess up these exams. In core 1 before the exam i was getting high 60's and low 70's, now i can only count 61 marks, and thats due to absolute mistakes would of easily got 65+ If i didnt mess up that integration question.

I know exactly how you feel! Some people are good at maths but make silly mistakes or do worse under exam conditions. As for the C1 paper i can sooo relate; i love integration but i messed up quite a bit for some annoying reason. The past is the past and core 2 is your future, which you can focus on to improve your marks to bring it back up to an A. Which exam board are you doing? I dont remember ever seeing optimisation in c2 with aqa...

im AQA, but people have told me theres a good chance optimisation is coming up for C2 this year.

quick question, a question asks me to write the binomial expansion of (1+x)^7 in ascending powers of x up and include the term x^3, hence determine the value of 1.000 01^7 correct to 15 significant figures, what am i supposde to do after i expand?

quick question, a question asks me to write the binomial expansion of (1+x)^7 in ascending powers of x up and include the term x^3, hence determine the value of 1.000 01^7 correct to 15 significant figures, what am i supposde to do after i expand?

Finding other values, I sometimes end up missing some of them, and it's not as easy as sine graphs. I don't get when to add 180 or 360, when to take away etc

Oh right well thanks for the heads up, i mean i was surprised it wasnt in c1 so it doesnt surprise but idk i wouldnt have expected it so thanks

for cast diagram all u ned to know is

positive solutions:
-Sin(x) you SUBTRACT your answer away from 180 or pi

-Cos(x) you SUBTRACT your answer away from 360 or 2 pi

-Tan(x) you ADD your answer to 180 or pi


negative solutions:
-Sin(x) you ADD your answer to 180 or pi AND for the second solution you SUBTRACT from 360 or 2 pi

-Cos(x) you SUBTRACT your answer from 180 or pi AND for the second solution you ADD to 180 or pi

-Tan(x) you SUBTRACT your answer from 180 or pi AND for the second solution you SUBTRACT your answer from 360 or 2 pi

Trying to remember these is confusing. I would rather draw a graph

Anybody know of any shape formulas that aren't in formula booklet that could possibly come up like cyclinders and that, not the traingles, never seen them in past papers, just checking.

you need to know your trapezium formula for a start

Core 1 was vile. It was absolutely vile.
I can sense c2 being vile too because they changed the structure last year so I'm expecting many 5 markers, an awful q on logs, an awful q on inductive sequences, and tricky numbers to trip people up.
I really struggle with trig, I don't get the CAST diagram, someone please explain it to me😭😭

Wait. Inductive sequences? What do you mean? For C2 (and C1) we have arithmetic sequences and geometric sequences, and we need to know how to play around with those...but what are inductive sequences? Can't find them in the textbook.
(I am doing Edexcel C2 by the way)