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Cambridge 4 unit: Conics 3.3 Question 9 (a) I'm up to: m= [b.sec@]/[a.tan@] ...(1) b.tan@ - ma.sec@ = k ...(2) but the worked solution says that the next step is: (2)<SUP>2</SUP>-(1)<SUP>2</SUP> -> m<SUP>2</SUP>a<SUP>2</SUP>(sec<SUP>2</SUP>@-tan<SUP>2</SUP>@) +...

How do i memorise essays? I've tried to memorise my essay, but i can't... :( I need to memorise it for tomorrow! Any tips on memorising it please? It's 900 words.

How do i write a synthesis essay in english? I don't really understand what a synthesis essay is. All I know is it's supposed to be justifying some argument about journeys I think. I need to do a synthesis task on thursday, and i'm really lost! :( Can sombody tell me the key-features...

The velocity of a particle is given by dx/dt = x^2 + 4 cm/s At the time t=0, x= -2 Find the displacement after pi/4 seconds. ANS: 2cm ___________________________________________ My working so far: dx/dt = x^2 + 4 dt/dx = 1/(x^2 + 4) t= 1/2 tan^-1 (x/2) + C Sub...

I need ideas for an 600 - 800 word journeys narrative. I cant think of any good ideas. :( This is due tomorrow btw, along with a feature article. :( Screw english.

I can't do this (I know I may sound stupid now, but everybody has their dumb moments). Can sombody show me the proof for this please? :D Prove: tan^-1 (1/2) + tan^-1 (1/3) = pi/4

What is the best way to study all of prelim chemistry in 4 days at the rate of 1 module per day?

Who is the most important person in physics? Is is newton, or galileo, or someone else?

Does anybody write directly into their Dot Point (physics or chemistry) book or do you just write your answers elsewhere?

Why are wavelengths longer in deep water than they are in shallow water?

how do i intergrate cosec^2 x ? This is NOT ^2x but (cosec x)^2 cosec^2 x = 1/sin^2 x. 1/sin^2 x = 2/ (1 - cos2x) ? Now how do i integrate this?

I'm 15 and i'm going to be turning 16 in june, and I was thinking if I should take my L's because i'll almost be in yr 12 by then, and i should study, but all my friends are 16 and they've all either taken their L's or they're planning to.

Prove: x^3 + y^3 + z^3 > 3xyz Can sombody show me how to do this?

I need help with this question please. I'm not sure what i'm doing wrong?? The straight line drawn from point P of a parabola to the vertex cuts the directrix at T. Prove that if the focus is S that ST is parallel to the tangent at P.

Find the cubic equation whos roots are the squares of that of x^3 + 2x + 1 = 0. How do i solve this? do i let find the roots in terms of abc, ab + bc + ca, a + b + c? and then do i square it and rearrange it untill i can work out the coefficients of the new cubic? How can i do this?

Solve the equation 10x^3 + 23x^2 + 5x - 2 = 0 given that one root is four times a second root. I tried to use the relationship between roots and coefficients and I ended up with: Let the roots equal A , 4A , B -b/a = 5A + B = -23/10 c/a = 4A^2 + 5AB = 1/2 -d/a = 4BA^2 Then I tried...

The roots of the equation 8x^3 - 30x^2 -3x +35 = 0 form an arithmatic sequence. Find the roots.

HELP HELP!!! 2cos2@ = tan(5pi/4) for 0<@<2pi Can anybody solve this? I have no idea how its done. @ is theta (an angle) in this example

what is the percentage component of asians in your school?

This is what i've done so far. I'm supposed to have 200 words, but i'm a little under. I'm not sure how good this is, and i would appreciate if somebody tell me how this could be improved. I want to pull my marks up because my average is 8/15 and it means I am almost failing english. Any...