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My teacher said *generally* 5.3 can take on extension, 5.2 can take on adv and 5.1 should stick with general or no maths at all. But I think if you actually like maths then you should do advanced.

So once I've raised them both, how do I get to x=e? & I tried that but its all increasing (answer says max)

One last question, how would I test it? lol, whats on either side of e?

Would they expect a maths adv student to do that? Multiplying is much less complicated lol!

Is it because elnx = xlne?

Thanks! I saw logx-x^2 as a whole thing. Didn't know you could separate them. For Q10, is the differentiation (1-lnx)/x^2 right? If so, when I make it equal 0, I get lnx=1 and then I don't know what to do.

Where did the 1/x come from? Also, isn't ln for loge? Just wondering...

Yes, quite Lol My teacher helped me with this question and she went from: logx-x^2 + 1 - x to logx - 2x + 1 Im just not sure where the x^2 went... However, she still got the right answer

I have a few more questions lol! 9. Find the point of inflection on the curve y=xlogex-x^2 For this one, I just need help differentiating once (f'(x)) 10. Find the stationary point on the curve y=lnx/x and determine its nature

I have 5 in the first 8 days (including weekend, not sure if you included or not). I think I can complain?

I think thats what confuses me haha! Thanks a lot though! Id rep but I have to spread more first... lol

Yeah :( I think I'll be dead by bio. No sleep for a week? Has anyone done it?

I'm really sorry about this, but where is the 1 from? The 1/lnx Because isn't the derivative of lnx, 1/x? Am I even making any sense? I don't think I even know what I'm talking about haha! I think I'll ask my teacher tomorrow...

This bit: s) loge(logex) haha..

Same, and with economics in between english and bio!!!

You're confusing me lol! I mean just the ln in Q2

Theres no x though

For Q2, could you write the derivative of loge?

r) x^3loge(x+1) s) loge(logex) t) lnx/x-2 Thanks!!!

Yeah, Im pretty pissed... I guess at least theres the weekend for maths...