I've done part a) I just simply cubed z and expanded, then seperated real and imaginary. I assume this is all that's needed? For part b) I have no idea how to do it.
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Originally Posted by fourierT I've done part a) I just simply cubed z and expanded, then seperated real and imaginary. I assume this is all that's needed? For part b) I have no idea how to do it. I doubt they are talking about the Cauchy Principal value so what I'm going to assume they mean in (b) is simply the value of
Last edited by romsek; Dec 11th 2013 at 07:01 PM.
Is it cos(ln2) + (i+1)sin(ln2) ?
Originally Posted by fourierT Is it cos(ln2) + (i+1)sin(ln2) ? no... you could have started with I guess that's a bit quicker
Originally Posted by romsek no... you could have started with I guess that's a bit quicker How can we evaluate that in algebraic form..wouldn't it just be numbers.
Originally Posted by fourierT How can we evaluate that in algebraic form..wouldn't it just be numbers. you see any variables in ?
Sure, i is algebraic, but is that all it wants, the real part and the imaginary part?
the algebraic form of a complex number is z = x + i y that's all it is.
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