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T(ct,c/t) is a point on the rectangular hyperbola xy=c^2. The point M is the foot of the perpendicular drawn from the origin O to the tangent to the hyperbola at T. i) Show that the tangent to the hyperbola at T has equation x+t^2 y-2ct=0 ii) Find the coordinates of M. iii) Find the...

ok:) i'll survive through the roots XD

stay with physics

yay thx! i dont like it when the numbers are weird with roots and stuff... but thx again!

more questions. 1. If P(x)=x^4 -8x^3 +30x^2 -56x +49 has a non-real double zero, solve the equation P(x)=0 over the complex field and factorise P(x) fully over the real field. 2. The equation x^3 +3x +2=0 has roots a,b and c. Find the equation with roots a+1/a, b+1/b, c+1/c. thx

oh yeah... i forgot the negative sign thx!! now i can keep going...

i dont quite get this example in the cambridge textbook. it's on page 134, example 19. can someone please explain it? thx! i dont quite get how you find the argument = pie/4

high five to that! XD

thx kurt!

=d

Isn't y=2b? isnt the solution be x+y=6?

i so agree on this hahaha XD

lol! i hope not if not im doomed for section 1 because there's so much reading!!!

one question about the exam tomorrow are we given 2 and a half hours to complete all 3 sections? or do they take the question papers of each section after the suggested time? good luck everyone!1

i recently read the FAQs for MBBS at UNSW. And it tells us about the UAI and ATAR scores required to gain an interview. Im not sure is whether or not the UMAT scores stated on the table are the raw marks (compared to the number of questions) or are those scaled already? THX

Handful of Milo cereal with milk Tea slice of raisin toast with butter appletiser nuts pasta with chicken kiwi and apple water

20mins

i meant the one for zinc hydrogen sulfate/copper hydrogen sulfate with sulfuric acid. coz it's too complicated to be balanced

but how do you write the equations for these neutralisation reactions?

thank YOU!! i can now hand in my prac book =)