Mega A Level Maths Thread MK II

I would have broken the six up from the first equation into and then use the distributive property. The $2^x$'s cancel out after some manipulation, leaving you with just one number with an $x$ as an exponent.

Then you can just take $\log_3$ of both sides.

Lost marks on this question...

Don't know where I went wrong...

$\int_{1}^{9} \frac{3}{\sqrt{5x+4}} dx$

I did:

You multiplied by a half rather than dividing by a half.

Realised as soon as I posted!

Those were the only marks I lost ****ing shame

Haha - it's not the best way to lose marks.

Damn, my UMS would have been... 94 if I gave myself 0/5 for it.

unlucky

I'm gonna make sure I scrutinize over everything

Damn, my UMS would have been... 94 if I gave myself 0/5 for it.

unlucky

I'm gonna make sure I scrutinize over everything

Haha - it's not the best way to lose marks.

Is there a good way to lose marks, though?

Not really, but there's a difference between not knowing the answer and just doing something stupid

To be honest, I'd rather lose marks to something stupid than have to admit I was unable to solve an A-level question

Someone give me some lovely Maths to do, I'm sure I've seen some good questions being posted on here today but I'm not too sure which pages :-/

The easiest check for integration questions is to differentiate and make sure get the same thing as before.

I'm such a noob at times

Prove that, if a constant force acts on a body, then the work done by the force is equal to the change in kinetic energy of the body.

Someone give me some lovely Maths to do, I'm sure I've seen some good questions being posted on here today but I'm not too sure which pages :-/

There's one on 111, one on 113 and a logs one on 110 (I think.) For once you finish DJ's problem.

Thanks and to be honest I can't really get anywhere with DJ's question as I'm not too confident in proving things in Mechanics :-/

Lol. Well those shouldn't keep you busy for long