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Okay, i know polynomials is one of the easiest topics for HSC 3u, but i'm new to this and kinda confused. Okay it says, Find the approximation of a root of the function f(x)= x^7-2 that lies between x=1 and x=2 by halving the interval once. So i halved 1+2, and got 3/2. When i subbed it...

Hey guys, well I was just wondering, should I spend some time revising prelim again? Or should I just continue on with the HSC course? By the way, is prelim retaught within the HSC course?

Question is: x^2 - 3x + k - 2 = 0 Solve for k, not sure how to do it :/ thanks.

Solve for x: e^x - 2e^x - 4 = 0 I know this is a reducible quadratic but I don't know what to do when trying to solve for x when I factorise the equation

What's the point of doing this? My teacher tells me to do it and I notice some BOSers are also doing it but why?

Find the Cartesian equation: [ a(p+q) , apq ] and pq =-4 I got y = -4a, but answer says y = -4

Prove Tan A - Tan A/2 = Tan A/2 x Sec A where t= Tan A/2 Thank you :)

So I was just wondering if the Prelims are an indicator of how well you go in year 12? Because I've heard lots of teachers say that it does so yeah

Alright I had this functions question and I've never really seen it before so here it is: f(x) = 3 -1 <= 2 <= 4 f(x)= x^3 +2 5 < 7 < 10 I checked the question and these are the proper figures so it says, Find one domain for both of these functions along with the range. :uhoh:

Hey BOSers, question is: The chord of contact of two tangents drawn from an external point P to the parabola x^2=8y has equation x+2y-3=0. Find the coordinates of P. Thanks in advance guys

Is anyone going?

Haii question is: Find the coordinates of point P on the parabola x = t^2, y=-2t where t=2. Find the equation of the line PS where S is the focus of the parabola. Fairly simple question, P is (4,-4). I redid the question twice and still got the wrong answer

A vertical tower of height h metres stands on horizontal ground. From a point P on the ground due east of the tower the angle of elevation of the top of the tower is 45°. From a point Q on the ground due south of the tower the angle of elevation of the top of the tower is 30°. If the distance...

Lately, or over the past 5 weeks I've been having weird sleeping patterns from like sleeping at 1-2 am. I don't know what is wrong but when I try to sleep at 10 (yes i'm tired) it drags on to 1 am... anyone experiencing this too? :mad2:

Hey guys, I'm in prelim and I was wondering, how many essays do you have to write in the trials and HSC? Memorising a whole essay, not to even mention memorising multiple essays for one exam, is strenuous enough. Should I stop memorising and remember key points to make up an essay in an exam? It...

Okay I'm new to this topic and know what to do for this question, but I don't understand where I went wrong. Trust me I've looked for what I did wrong and couldn't find anything. Anyways: Find the equation of the parabola with Vertex (1,0), and Focus (1,4). Okay so my working is : To...

The polynomial P(x)=x^3-6x^2+kx+14 has a zero at x = 1. Find k hence, factorise P(X). Originally I found K as -9 as I subbed in x=1 and let P(1) = 0, but when I factorised it, it didn't come with the right answer so yeahh.. Anyways answer is P(X) = (x-1)(x-7)(x+2) Nothing like maths...

So does anyone else take a long time to write up notes from a textbook? For some reason it takes me at least 10-15 mins per page to actually summarise and somewhat understand it :frown2: Are there any tips on how to note take faster? I just view that most the information on each page is crucial...

Hey guys, are there any 2u resources that are either SOLELY based on coordinate geo, calculus and trigonometry? Note: Year 11 level please and I've used up the resources. ;)

Can someone help me do : Solve the equation: z^{2}+iz-1-i=0 Forgot how to do it.. thanks