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yeh thanks

oh yea function of a function rule wouldnt that be... 3(tan^2 3x)(sec^2 3x) not sure

^^

can someone pls explain question 13 http://www.boardofstudies.nsw.edu.au/hsc_exams/hsc2003exams/pdf_doc/chemistry_03.pdf

thanks :)

a) use de moivres theorem to show that cos5A= 16cos^5A-20cos^3A+5cosA b)hence solve 16x^4-20x^3+5=0 c) hence determine the exact value of cos^2(pi/10)cos^2(3pi/10)

1)integration of x.2^(x^2)

thanks

1) find the equation of a hyperbola with foci (10,0) and (-10,0) and asymptotes y=4x/3 and y=-4x/3 2)find the equation of a hyperbola with eccentricity 5/4, focus (-10,0) and directrix x=-32/5 thanks :)

inegrate: 0-pi/4 [sin2xcos2x.dx] i know you could use reverse chain rule but this question says use the compund angle formula

true

hot people arent happy with the way they look cause they want to look hotter, hence thinking their ugly. ugly people accept the way they look so much that they think their good looking.

I need help on how to answer questions in exams for chem and other sciences. I have a good knowledge and understanding of chemistry but I don't get good good marks. any tips?

is anyone doing 10 units with an ext2 subject as well? it is too risky?

is 10 units enough if im doing ext2 maths?

daaayum, lol no wonder.

i would preferably do 10 but idk, just incase i wanna drop ext 2

i currently do 13 units, 3unit maths, adv english, bio, chem, business studies, SOR II. Im thinking of picking up maths ext2 next year which leaves with 14 units so i can drop either 3 or 4 units. im probably gonna either drop business and SOR leaving me with 10 units, or drop business and...

really? i thought 4 unit was supposed to be hard.

it depends on ur multiple intelligence. different people study differently