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Happy New Years from Math Man (1 Viewer)
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SpiralFlex
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Are we allowed to take the exponent of the give expansions? Because I am not sure if that is "breaking" the laws of University Mathematics.
SpiralFlex
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I did the first part like this. (Though I am not using what is given.)
I think this is an alternative.
This is because;
=\frac{e^{ix}-e^{-ix}}{2i}=\sin x)
=\frac{e^{ix}+e^{-ix}}{2}=\cos x)
Substituting
into the form,
Now by realising,
I think this is an alternative.
This is because;
Substituting
Now by realising,
Last edited:
SpiralFlex
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There doesn't seem to be a faster way for the second solution that I can think of. :/ Guess it's pure algebra.
Carrotsticks
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lol this seems an awful lot like MATH1901/6
lol the second part is from the first math 1901 assignment...but i made it easier so it is doable for hsc kids
fixed up..ty
use the bottom formula
SpiralFlex
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We need to wait until either Australia Day/Easter/Halloween/Christmas 2012 for more questions from the math man. 
true...but we are forgetting people's birthdaysWe need to wait until either Australia Day/Easter/Halloween/Christmas 2012 for more questions from the math man.