Re: HSC 2015 4U Marathon
$A tall building stands on level ground. The nozzle of a water sprinkler is positioned at a point P on the ground at a distance d from a wall of the building. Water sprays from the nozzle with speed V and the nozzle can be pointed in any direction from P. Suppose that...
imagine if glittergal went and sat the exam last year......wouldve broken the 85% mark probs. Also I heard that a member called fus ro dah got over 85 or something? Can one of the older members confirm this?
Re: HSC 2015 4U Marathon - Advanced Level
Okay, but in that case the question doesn't belong in the advanced thread, should be in the normal 4U thread.
Bump
Re: HSC 2015 4U Marathon - Advanced Level
Dan why did u break the question up into parts? It might've been a nice question if u didn't spoon feed (like the HSC unfortunately). Here's a hard one:
\\ $Show that for $a,b,c >0: (1-a)^2+(1-b)^2+(1-c)^2 \geq...