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90/100 is and E4, and 45/50 is an E4. And yes, as it is a 1 unit subject it is 35/50. 35/50 is the lowest E3

Re: 60/84? what he said

clearly you are a noob, like it states in you name, he was saying "when" it reaches its maximum displacement. B is the maximum displacement, but it is when nt=pi/2 that bsin(nt) is at its maximum displacement ffs

distance was 8 units if im not mistaken

you should have got -ln(3/5), which changes to ln((3/5)^-1) which = ln(5/3)

I'm sorry, but there are about 10000000 things wrong with this statement

but but but.... lol ive spend the last couple of weeks revising, and done every paper so i have hardly done anything today anyways.

20m

i know what i did wrong :)

h=14.64m?

jesus youve got some good questions

as P(x) is odd, it has roots, Ax(x-4)(x+4) P(-3)=-3A(-7)(-1) = -21A=21 A=-1 P(x)= -x(x+4)(x-4) :)

Sanic - yay i got 12 :D

sorry put in wrong c

dv/dt = -0.05v^{3} dt/dv = 1/-0.05v^{3} t=10/v^{2}+C=10/v^{2}-1 v^{2}=10/t+1 v=\sqrt{10}/\sqrt{t+1} x=2\sqrt{10}t t=\sqrt{10} left out integrating steps, it this correct?

sqrt10s? not sure bout this one

was that question in an HSC test?

thats right

19.42m

what is the amplitude and period of: cos^{2}3t