Recent content by hedgehog_7

Found it easier than last years? :l Hoping for a 87 raw

Answer to q 10? 12 d ii), 13 c ii)?

oh thanks so much. is the range really that big between a 93 and 97 external mark?? 79 raw = 93 and 90 raw = 97??? wtf ALSO: now that im looking at this database spreadsheet thingy how does it work for MX1? because isnt the unweighted raw mark meant to be out of 70 not 100?

I know this kinda varies from year to year due to test difficulty, but approximately what marks am i looking at in the actual HSC exam solely to warrant me a 90 external mark in 4u? Also what would the approximate mark be if i was looking at a 93-94 external mark and also what mark for a 96-97...

In regards to taking 4U maths, if you really consider yourself an average mathematician and looking towards a 90+ for MX2, you have to bear in mind that taking this course really requires dedication and a LOT of work; what i mean by a lot of work im talking about generally a couple hours...

Re: HSC 2016 4U Marathon My issue is why was the answer the sum of Im(z1) and not the sum of Im(z2). They provide different answers so what was the reasoning in choosing one over the other

Re: HSC 2016 4U Marathon Complex number question I) If w is a non real seventh root of smallest positive argument, show that w = cis 2pi/7 II) Show that 1 + w^2 + w^3 + w^3 + w^4+ w^5 + w^6 = 0 III) Show that w + w^-1 = 2 cos (2pi/7) , hence, find the exact value of cos...

Re: HSC 2016 4U Marathon A mass of 1kg is fastened by a string of length 1m to a point 0.5m above a smooth horizontal table and is describing a circl o nthe table with uniform angular speed of 1 revolution in 2 seconds. How do i find the force exerted on the table? Answer is (g - 0.5pi^2)N

Re: HSC 2016 4U Marathon The area between y = 2x +1 and y = (x+1)^2 is rotated about y = -1 with x=0 as the boundary axis. Find the volume

Anyone have any views and opinions on this years budget? Also does anyone have any good essay questions in relation to the budget? Its coming up in our trials so anyone help is welcome

For the describe how Bohr's postulates led to teh development of a mathematical model to account for the existence of the hydrogen spectrum dotpoint, are we expected to derive Balmers equation? whats required

Re: HSC 2016 4U Marathon oh i see... T_T

Re: HSC 2016 4U Marathon a projectile is fired vertically upwards from the earths surface with velocity U m/s. The retardation due to gravity is given by the law k/x^2 where x is the distance of the projectile from the centre of the earth, and k is a constant. The acceleration due to gravity on...

Re: HSC 2016 4U Marathon A particle is thrown vertically upwards where the air resistance is given by R = 0.01mv^2. If the velocity of projection is 60m/s find the time to reach the highest point. Answer is 3.43 s

Title says it all. What book should i use to start learning mechanics. Brand new to the topic, which textbook should i start with