Recent content by sifANDREW

Hey i was wondering what you guys do in preparation for studying? i have the essentials, like a packet of chips for snacking, a bottle of water, and headphones for music (i study so much better with music) and skype (me and my cousin talk to each other in order to motivate each other and keep...

Yep got it. Thanks for clarification!

Sorry i still dont really understand the whole postulating thing. How can someone just think of let b^2 = a^2(1-e^2) or let b^2 = a^2(e^2-1) Or is that the whole point of a postulate and then by using values of "e" you equate b? Since P(x,y) is any point of the ellipse curve, can't i sub in...

Hey uhm...can you explain to me how you actually think of postulating it? Because i dont understand how you can show that 'b' is the extreme point on the hyperbola. So yea can you just explain how you postulate it and it's thought processes thanks lol.

Hey i was just wondering how you would derive the hyperbola formula. This is how i derived the ellipse formula: Ellipse with major axis (x) 2a and minor axis (y) 2b, center (0,0) point A(a,0) is at extremity of major axis, B(0,b) is extremity at minor axis Point S (k,0) and S'(-k,0) where 0<k<a...

92 and im happy i guess.

Wow you guys start past papers already? Does that mean you finished everything? i think im gonna start but im still missing out some topics =S

hahahaha

According to my physics teacher... Piezo electric effect: A piezoelectric crystal contains dipole atoms within it. When a piezoelectric crystal is compressed (preassure is applied to both ends) it lines up the dipole atoms, creating a potential difference (used in transducers to receive the...

\int \frac{1}{v + v^3}dv \frac{1}{v(1+v^2)} \equiv \frac{a}{v} + \frac{bv +c}{1+v^2} 1\equiv a(1+v^2) + bv^2 + cv v = 0, a = 1 Compare Coefficients x^2 : a + b = 0 b=-1 v = 1, 2a + b +c = 1 c=0 \int \frac{1}{v+v^3}dv = \int \frac{1}{v}-\frac{v}{1+v^2}dv \int \frac{1}{v+v^3}dv = ln(v)...

Oportos. Not THAT good are they? Little kids smoking. In front of a public library. With their blonde hair and ratties. Henleys Hummers and oversized cars Whiny, high pitched people Dyed hair People's ignorance and stubbornness. And inconsiderate people and people who stare when i use my...

SO GLAD I WAS ABLE TO DO THIS! this is how i done it eqn of circle : x^2 + y^2 = 4 with P(x,y) , Q(x,-y) area of parabola with base 2y and height 2y ( using simpson's area rule) h = y y0=0 y1=2y y2=0 A= y/3(8y) DeltaArea = (8y^2)/3 Deltax = 8/3 (4-x^2) deltax Area =...

Hey i saw recently on your post you went from 25th from adv english to 1? i was wondering if you have any tips for me because currently my rank is 50/130 and i really want to improve as english is my worse subject. So if you have any free time could you give me some tips! thank you =]

What book are you using? Cambridge What topic your starting with? Complex Numbers What pace is your school going at? Very slow pace, since complex numbers seems like a whole different way to look at numbers and many people in my class arnt the brightest, though im sure the hsc is how hard...

Hey dp do you think you can give me some tips on 4u and how to study, time allocation..etc