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same cheers to ianism

I think it was some small piece of paper, you fill in your details and sign it.

Haven't got mine either, was considering calling them about it tomorrow :(

What was your answer for the number of days taken to get from 2m to 1m for the volume?

Question: [3(x+1)] / (x-1) is less than or equal to 2x I was taught to times both sides by the denominator squared. Why does the solution just bring the denominator across to the other side? I have no idea. Can someone explain to me THANKS

NVM I GOT IT! Thanks Aereth, your the best!

typo fixed it

I get: 2nCn = [(nCn)(nC0)]+ [(nCn-1)(nC1)]+ [(nCn-2)(nC2)] + ... + [(nC1)(nCn-2)]+ [(nC0)(nCn)] Is that right? What's next?

I tried that. I can't get the compare coefficients bit.

So i'm having extreme difficulty trying to do this, hope you can help me out =] (nC0)^2 + (nC1)^2 + (nC2)^2 + ... + (nCn)^2 = (2n)Cn thanks!

It's a 4 marker btw Thanks guys! I GET IT NOW! WOO

Hey guys, Can anybody tell me how to integrate this: sin (ln x) dx It says use integration by part but i have no idea what to let what equal what. Help is appreciated! Cheeerrs~

My teacher told me if you're short with the required amount of texts you can't get higher than a C(not sure what mark that ranges). However, in this case we oversupplied, so i have noo idea.

No book. Just a question from tuition. According to the answers, isn't it just messed up the 1st question is 1260, then the question without A's first and last, is 1860? it's not suppose to go up.

For that same question. How do you work this: 5 letter codes that does not begin or start with A. Answer: 1860 I got 600 :(

see what the hell he got 1920 :S

Hey guys, This is a particular permutation question which annoys me. I use the Cambridge method and get a total different answer to what another textbooks says, cause they have some other way of working it out. I think it was maths in focus, but don't take my word there. So this ISN'T the exact...

LOL.. back at u ;)

Don't know. Don't care. You get the point, that's all that matters

You can also improve them by yourself (which i find easier than going through with teachers) I just think it's more effective studying at home instead of going back to school. In my case, i only go back to go over stuff we've already done (can do at home) and do exam papers for revision (can do...