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For questions that ask "how long will it take..." is it valid to simply test some numbers? For example in 2013 Mathematics 2U paper Q13)d)iii) it asks how long it takes to repay $370k If I test n = 192, A = $1387.14 and n = 193, A = -$1603.91 Therefore it will take 193 months to...

Quick question on the "show that" question. The question is "Show that x = pi/6 is a solution of cot(x) = tan(2x). The worked out solution from school basically they subbed x = pi/6 into cot(x) and then in tan(2x). Then they would equal, so it's a solution. BUT I thought we are supposed...

Anyone know if RTA has driving tests (P1) on saturdays/school holidays esp. for the Chatswood one? Just looking at it now, either saturdays are fully booked as soon as they are available or they dont do weekend at all. As for school holidays, if they do open are they really hard to book? ie...

If anyone wants to share some online video resources (eg. HscHub, myhsconline, edflix) or tutoring centre notes, send me a PM, I've got some good notes on some science from a good tutoring centre. If there's a group of people who want to share around resources then maybe we shall create a...

Just a quick question = the denominator shows that x is NOT equal to 3 and -3. But on the graph, there isn't a vertical asymptote at x = -3 and this is also shown in the limit calculation I wrote below. Is this because, even though x is NOT equal to x = -3, there is a continuity there and the...

So Year 11 this year were the last ones to receive the crappy laptops in Year 9 but noone in our school uses them. With the new BYOD (Bring your own device), there are only a handful (2-3 per class) who brings a tablet/2-in-1 laptop to school. With Year 12 coming soon, I'm wondering if it...