Mega A Level Maths Thread MK II

True enough

I'd go back a step before the fraction -it's the right idea up until then

I hate geometry!!

You and me both

Yeah defo, moving the log back to the x wow it took me the same time the exam lasts for 1 log question x_x and with hints from you LOOL

Why the hate on geometry? I agree that the addition angle formulae is fiddly but some other geometric theorems are absolutely gorgeous.

Lol, your attention isn't distracted in an exam

Have you tried problem 53 on the STEP questions thread, that alone is reason enough to hate geometry, though the proof of the bond angles in chemical compounds is pretty cool

No, you guys scared me by your talk of it.

I guess so!! Haha love bond angels, ima go eat then I'll finish the equation

Yeah lol, sleepy writers tut tut

Yes but you don't hate geometry


Good luck.

Haha I hope that's what it was

aha thanks let me try it out, just to clarify, 2x/x=2?

haha yup, or they made a typo! :P

That's an aweful lot of mistakes

Yup, they probably got someone like me to do it! And thanks joostan struggling with this to ...:s

Whasup?

Can you do it like that?

I think I just got it d/w I was being silly haha...

$x\log_{3}2+1=2x+log_{3}5 \rightarrow log_{3}2+1=\frac{2x+log_{3}5}{x}$

$\rightarrow log_{3}2+1=2+\frac{log_{3}5}{x} \rightarrow log_{3}2-1=\frac{log_{3}5}{x}$

$\rightarrow xlog_{3}2-1=log_{3}5 \rightarrow x=\frac{log_{3}5}{log_{3}2-1}$

I went a "slightly" overboard (as I do with 'show that questions') haha...to think I only learnt how to use latex yesterday

I've just done a trapezium rule question on a C2 paper, and it didn't state how many decimal places/significant figures they wanted the answer. I normally just leave it as it is (I got 11.419) but the mark scheme says 11.42 cao, can someone tell me what 'cao' means, and would I lose a mark for not rounding?