Subject: Math

I need derivative of 1/(sin^4)x

Anyone can give a hint?

I go: -(1/(sin^8)x) . (4(sin^3)x) . cos x = ... = - (4 cosx/(sin^5)x)
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nevemind, i got i right, but looked at a result of another task and for obvious reasons could not match them :)
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does this help me win sokker matches?
:P
i need this one solved

9x-3i > 3(3x-7u)
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its the basic code for keeper movements it seems ;)

lol why wont it let you type 'less than 3'?
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?

Try and type a 'less than' symbol and a 3 toghther

so you got it then ;)


wow wtf :S

thats crazy alright
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The hint is "use the chain rule"

take sin(x) as "y", then, you have to derive

y^(-4), isn it?

the derivative of that is - 4 y^(-5) y'

I hope it helps you
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Hi

are there any first-order logic(university stuff) specialsts here?

I´d ask to check if my sentences derived from predicates and constants are correct

Not specialist at all but I could look at it.
Passed the practical part (weekly tasks for 12 weeks), should do a written exam soon.

Ask Myname, I guess you won't find better mathematicians here than him. (He's a PhD-student.)

I don't really like logic and I'm not very good at it, but I might give it a try ;-)

Ask Myname, I guess you won't find better mathematicians here than him. (He's a PhD-student.)

Eheheh, that doesn't mean he is a specialist in logic: I got my PhD in maths in 2004...but I studied very little logic: also mathematicians use to specialize themselves :)
...but maybe he knows logic very well!

Algebraic topology, so no ;-)