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just to clear things up to the OP, 'more reliable' by no means correlates to 'reliable'.

ω=2pi/(90*60)=pi/2700 rad./s v=rω=9500*1000*(pi/2700) m/s Hence, the satellite has tangential velocity of 11053.75 m/s.

How you been goodwin?

x+(1/x)=N+(1/N) Nx^2+N=(N^2+1)x Nx^2-(N^2+1)+N=0 x=(N^2+1)+/-sqrt[(N^2+1)^2-4N^2] /2N x=(N^2+1)+/-sqrt[(N^2-1)^2] /2N x=(N^2+1)+/-(N^2-1) /2N x=N or N^2+1-(N^2-1) /2N x=N or 1/N Hence, f(N)=f(1/N). Since N<1, 1/N>1 and therefore lies in the domain x>=1. => f^(-1)[f(N)]=f^(-1)[f(1/N)]=1/N

sin(x)cos(x)cos(2x) =(1/2)[2sin(x)cos(x)]cos(2x) =(1/2)sin(2x)cos(2x) =(1/2)(1/2)[2sin(2x)cos(2x) =(1/4)sin(4x)

LOL, nevermind guys, I was looking at the wrong answer in the back.

What was the molarity of silver ion in a solution, 50mL of which produced 1.87g silver chloride when excess sodium chloride solution was added to it? Thanks guys.

yep, the negative should be there

^ looks right.

Let a=alpha, b=beta, c=gamma. a^2(b+c)+b^2(a+c)+c^2(a+b) =a^2[(a+b+c)-a]+b^2[(a+b+c)-b]+c^2[(a+b+c)-c] =a^2(a+b+c)-a^3+b^2(a+b+c)-b^3+c^2(a+b+c)-c^3 =(a+b+c)[a^2+b^2+c^2]-(a^3+b^3+c^3) a+b+c=-3 a^2+b^2+c^2=(a+b+c)^2-2(ab+ac+bc)=(-3)^2-2(-2)=13...

no

Let a=alpha, b=beta, c=gamma. a^2(b+c)+b^2(a+c)+c^2(a+b) =a^2[(a+b+c)-a]+b^2[(a+b+c)-b]+c^2[(a+b+c)-c] =a^2(a+b+c)-a^3+b^2(a+b+c)-b^3+c^2(a+b+c)-c^3 =(a+b+c)[a^2+b^2+c^2]-(a^3+b^3+c^3) Hopefully you can do it now. Edit: lol'd at your 'lazycollegesenior' dp

Just revised my logic and I'm pretty sure it's absolutely fucked.

Is the answer 63360 permutations for the first part?

80-85

space is an extension of moving about. motors and generators is an extension of electricity in the home. ideas to implementation i dont really know.

yeh just read theind's post.

Thank you barbenator, appreciate that comment bro :)

You are a bloody legend for this mate. Thanks.

Didn't read your question properly lol, I think its energy.