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Hi, here's the question: Find the area bound by the curve y=x^2 + 4 and the lines y=4, and y=13 So here's what I did. x=(y-40)^0.5 =\int_4^{13} (y-4)^{0.5}\, dy ={\frac{(y-4)^{3/2}}{3/2}}_4^{13} ={F(13)}\minus\{F(4)} =F(13) - F(4)...

Re: Don't quite understand a concept of integration - conflicting concepts - need hel lol crap, so I did misread the question, it meant (2/3)*(area of AOP). Silly silly me...

What are the conjugate acids of: (a) aniline: C6H5-NH2 (b) hydrazine: N2H4 (c) hypobromite: OBr- (d) sulfide ion: S(2-) (e) Hydrogen phosphate ion: HPO4(2-) Do I just add a H+ for each question? What about part(a) and part(b), like is it C6H5-NH3, or C6H6-NH2, etc etc Thanks appreciate the...

IP address: correct ISP: provider correct location: Melbourne, Victoria. WTFFFFFFF???

Re: Don't quite understand a concept of integration - conflicting concepts - need hel Hi, I could really use some help on this question: don't think I understood the wording of it or something: Sketch y=x^2 and mark the points A(a,a^2), B(-a,a^2), P(a,0), Q(a,0) (a) Show that a(integral...

Re: Don't quite understand a concept of integration - conflicting concepts - need hel You mean the end points of the interval right? Thanks

Hi, I just started integration a few days ago, and I'm up to the part of the Definite Integral and finding an area below the x-axis and all that stuff. Problem is, the Cambridge definition of definite integral with an integrand with negative values, is COMPLETELY different from the booklet my...

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I dunno if Terry Lee did this, but this is my own method I created for my exam - there was an almost similar question, just involving an ellipse instead of a hyperbola in my exam.

Here's the FULL SOLUTION, only doing this because this is the one of the two questions i've been able to do in the marathon =(, also I dunno, if Anchovies still wants to know how to do it, (assuming he doesn't...) (a) Implicit diffrentiation: 2x/a^2 - 2yy'/b^2 = 0 y' = (2x/a^2)*(b^2/2y) y' =...

What a great guy, Novak, not only is he an extremely talented player, but he's also got a great personality to boot, Serbians were going CRAZY over him, xD

DJOKOVIC WON!!!!!!!!!!!!!!!!!!!!!!!!!! woot WOOT!!

5-2 Murray's creeping up slowly with a break in the bag - still don't think he's gonna win the set... EDIT: hehehe Dokovic 2 sets to luv, I think it's gonna be a disappointing match if Murray loses the 3rd set and Djokovic does a straight sets demolition. Cross my fingers Murray wins the 3rd.

5-0 2ND SET - Dojokovic?? i'll pay anyone who thinks Murray can get the 2nd set, $200 if he actually does win the 2nd.

1st set - Djokovic =)

3 games, 24 minutes... Jesus - guess that just shows you the quality of the players...

Djokovic gonna definitely win.

Djokovic has declared THE NEW ERA of men's tennis.

nope, my school is pretty damn slow

xD but thats the fakest shit i've ever seen