Recent content by Nktnet

1. Billy Elliot

What is the name of the song when Billy dances to dad, https://www.youtube.com/watch?v=CH8HV5gXQB4 ?

A bag of salt was projected vertically upwards from a height of 1 and remains in the air for 6.1 s. (a) What speed was the bag thrown at, and (b) What was the distance the bag travelled before returning to the height of 1 m?
3. General Solutionfor Trig Equations HSC 3U

Thank you so much! @Herowise and also @Integrand. Just that for Q2, I think you swapped the pi/6 with pi/2. Otherwise all steps are clear! <3
4. General Solutionfor Trig Equations HSC 3U

Find the general solution for: Q1: sin x + cos x = 1 Q2: √3 cosx - sinx = 1 Thanks!
5. Polynomial/roots question [Mathematics Preliminary Extension 1]

Thank you so much! That makes a lot of sense and was really easy to follow.
6. Polynomial/roots question [Mathematics Preliminary Extension 1]

The equation x3-bx2+cx-d = 0, where d>0, has roots α, ß and αß. Show that (c+d)2 = (b+1)2d. New to forums and not sure if this is how things are done. Sorry in advance! And thanks!
7. Parametrics question

Thanks this helps, (12 years later)!