• Best of luck to the class of 2025 for their HSC exams. You got this!
    Let us know your thoughts on the HSC exams here

Interesting dilemma (1 Viewer)

deswa1

Well-Known Member
Joined
Jul 12, 2011
Messages
2,251
Gender
Male
HSC
2012
Hey guys,

I was just looking at Euler's formula and came up with this:

<a href="http://www.codecogs.com/eqnedit.php?latex=e^{i\pi}=-1\\ e^{2i\pi}=1\textup{ (On squaring)}\\ e^{2i\pi}=e^0\\ 2i\pi=0\textup{ (On equating powers)}\\ \therefore i\pi=0" target="_blank"><img src="http://latex.codecogs.com/gif.latex?e^{i\pi}=-1\\ e^{2i\pi}=1\textup{ (On squaring)}\\ e^{2i\pi}=e^0\\ 2i\pi=0\textup{ (On equating powers)}\\ \therefore i\pi=0" title="e^{i\pi}=-1\\ e^{2i\pi}=1\textup{ (On squaring)}\\ e^{2i\pi}=e^0\\ 2i\pi=0\textup{ (On equating powers)}\\ \therefore i\pi=0" /></a>

Obviously it is wrong somewhere but I don't know where. I'm assuming the error is between the third and fourth lines but is there a reason why I can't equate powers?

Thanks :)
 

Carrotsticks

Retired
Joined
Jun 29, 2009
Messages
9,467
Gender
Undisclosed
HSC
N/A
Hey guys,

I was just looking at Euler's formula and came up with this:



Obviously it is wrong somewhere but I don't know where. I'm assuming the error is between the third and fourth lines but is there a reason why I can't equate powers?

Thanks :)
Because the exponential definition is periodic, so you can't actually just use 0 and should use so you should have:



The equivalent of what you just said was:


 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top