Search results

well its actually égal but latex discriminates against diacritic letters, it means equal as in. Deux fois sept egal quatorze . Two times three equals fourteen. I think... op you need to confirm me

$Convertir au Systeme international d'unites$ \ \therefore 3mm/s= 0.003m/s $en supposant que vous pouvez faire le calcul$ $resultats est egal 0.096m^{3}/s,\frac{3}{125}(\sqrt{17}+1)m^{2}/s $ I haven't done french in a long time...

tomato (Y)

Re: HSC 2013 2U Marathon a)\ \frac{A(r+2)}{r(r+2)}+\frac{Br}{r(r+2)} \frac{A(r+2)+Br}{r(r+2)} \frac{Ar+2A+Br}{r(r+2)} \frac{2A+r(A+B)}{r(r+2)} $\therefore A=\frac{1}{2}, B=-\frac{1}{2} b) \ $Using results in part a we can rearrange$ \ \frac{1}{r(r+2)} \ $into$\...

Re: HSC 2013 2U Marathon It has being a long time.... $Find the sum of the following series:$ \ 1^{2}-3^{2} + 5^{2} -7^{2} +9^{2} -11^{2} + ... + 10001^{2} - 10003^{2}

6(2-\frac{1+x}{6})=6(2x) 12-(1+x)=12x \ $(the brackets is where you probably messed up) 11-x=12x $ and you get$ \ x=\frac{11}{13} edit: nevermind...

yes they are

Re: HSC 2013 2U Marathon omg finally......... somebody from 2U, and useful tip use spaces~ i)\ $Show that$ \ \frac{d}{dx}(ln(sec{x}+tan{x}))= sec{x} ii)\ $Hence find$ \int_{0}^{\frac{\pi}{4}}sec{x} \ dx

My best advice is to ask one of your teachers, to call your parents and tell them that using the computer is important for research assignments and homework. Surely they have enough reason to accept that.

Re: HSC 2013 2U Marathon [ln {x+\sqrt{x^{2}+8}}]\ _{0}^{1} = ln ({1+\sqrt{3}})-ln {\sqrt{8}} = ln{\frac{4}{2\sqrt{2}}} = ln{\frac{4}{2\sqrt{2}}} = \frac{ln {2}}{2} Now somebody answer my question on the 3 unit thread and previous question on here

$The Ionic equation of Pb(NO_{3})_{2} \ is: Pb^{2+} + 2NO_{3} $Since the given molarity (concentration) is 0.02M\cdot L^{-1}$ \ $you simply have times the molarity with the molar ratio of the ionic equation$ $So the answer to the first question is 0.04M\cdot L^{-1}$ btw don't trust omed62...

SATS are only accepted in the USA, and select universities around the world (but rare) HSC are only accepted in the USA and select universities around the world (rare) IB are accepted in most western universities and a few Asian universities, the credentials for it are also widely recognized. IB...

Re: HSC 2013 2U Marathon \int \frac {\frac {1}{x}} {\ln{x}} \ dx \int \frac {x^{-1}} {\ln{x}} \ dx $Using the glorious standard integrals the answer is:$ \ \ln {\ln {x}} +c

Re: HSC 2013 3U Marathon Thread $A piston (shown above) has a rod (AB) that is rotating at$ \ \frac{\pi}{4} $rads/s \\\ a)$Prove that the distance of AC is given by$ \ x=\sqrt{144 - 4sin^2\theta}+2cos\theta $ b) Hence find the velocity of C at 270^{\circ }

Re: HSC 2013 2U Marathon It is about time I give the answer to my question... $Since it is known that the distance from point P(x,y) to point A(p,q) is equal to p(x,y) and to line y = 1$ \therefore \ $using perpendicular formula \sqrt {(x-p)^2 +(y-q)^2} = \frac{|0+y+1|}{\sqrt{0^2 + 1^2 }}...

Re: HSC 2013 3U Marathon Thread The 3U thread needs bumping as well... $The curve C has equation $ xy = \frac{1}{2} . $The tangents to C at the distinct points$ \ P(p,\frac{1}{2p}) \ and \ Q (q,\frac{1}{2q} ), $where p and q are positive, intersect at T$ $Show that T is the point$...

Re: HSC 2013 2U Marathon \int \frac{{x^3}}{x^2 +1}dx =\int x - \frac{x}{x^2 +1}dx \int x \ dx \ - \int \frac{x}{x^2 +1} \ dx = \ \frac{x^2}{2} \ - \ \frac{1}{2} ln(x^2 +1)+c tbh your hint gave me an even harder time solving those integration questions :L I reckon some 2U people...

y=\frac{1}{x} I tried...

Re: HSC 2013 2U Marathon

Re: HSC 2013 2U Marathon Am I right? EDIT: damn got solved while I was solving :L