Search results

xy=c^2 let the set of parallel chords have common gradient m. For a secant (chord extended) with Y-intercept b the equation of the line is y= mx+b this secant cut the rectangular hyperbolar at the solutions to the system of 2 equations, which also represents the extremities of the...

- parametric form allows you to work witha single variable in trig form, cartesian form allows you to work with two variables satisfying a set of conditions. use parametric form if you are stuck. - the sum of the roots of (x^2 + ax + b=0) is -a. You might not need to solve equations. Eg...

you should: Go through the concepts. don't spend too much time though. Practice your algebra and Calculus - This is the real reason for most people doing badly. Do some papers under exam conditions to see what problems you have and focus on these problems.

Alternative solution without integration: (1) find k. by your given conditions we have -g = -k/R^2 k = gR^2 (2)show that E=[(v^2)/2 - k/x ] for the particle is a constant. dE/dt = [v * dv/dt ]- [ (-k/x^2)* dx/dt ] = [v*a - a*v] // a is the acceleration. = 0...

answering the second question, I think less is better because the teacher can give you individual attention and the small group of people tend to achieve a better average HSC mark than a large group.

by the way.. it's quite hard to vote on this poll if there are exactly 5 or 20 people in the school taking this subject.

started with 6, dropped to 3.

hmm participation(lack of) seems to be a problem.

talk about language.. I understand about 5% of the relevant sections of the english syllabus. 91.. is like a.. average 85 raw mark on good scaling subjects?

ofcourse you can! some turns out nicely too.

the chord subtends an angle of Pi/3 (60 degrees) at the center. This could be seen by joining the 2 extremities of the chord to the center and a equilateral triangle is formed the area of the major segment = area of major sector + triangle = (1/2)(5Pi/3) * r^2 + (1/2)(sin Pi/3)*r^2 =...

I thought the statistics showed girls are better overall. In my math class the rankings are usually: one boy all the girls in the class rest of the boys.

You haven't been learning much from your english classes Jay.

1. The rules you want do not exist, Try to do things without thinking of rules, the best students are confident of what they write not because they are sticking to a prepared method, but rather they understand what they are doing. 2. Understand everything, it's not in the spirit of...

- Know how to do arithmetic with complex numbers: -- Using conjugates (eg for division, expanding) -- Using roots of unity to find ALL nth roots -- Using the polar form (mod/arg) -- |xy| =|x||y| -- arg(xy) = arg(x) + arg(y) -- "multiply the modulus, add the arguments" - Translate...

normal distribution: mean + 2 sigma is approximately more than 97.5 hmmm will that make 350 -> ~ 97 UAI :P

It takes time to do, thats all

Q: How about addition/division/multiplication/etc of 2 graphs? do we need to find the Points of inflexion, Maxima and Minima? A: Yes (sorry, this changes some of the points I have made so far, but I think it is clear where it is appropriate to use calculas)

Q: Do we have to show how we determine the properties of the curve? A: No. There is no need to show why you have draw a curve the way you have.

Try to think of mechanics as solving a series of differential equations. Plus YAY, someone else voted for graph sketching! does anyone have advice on what to do when sketching graphs in the HSC?