seanieg89 Well-Known Member Joined Aug 8, 2006 Messages 2,662 Gender Male HSC 2007 Oct 21, 2011 #21 It is a pretty immediate fact from the way the the trig functions and the exponentials are defined in higher mathematics (read about power series if you are really interested).
It is a pretty immediate fact from the way the the trig functions and the exponentials are defined in higher mathematics (read about power series if you are really interested).
H hup Member Joined Jan 25, 2011 Messages 250 Gender Undisclosed HSC N/A Oct 21, 2011 #22 there is the noob way of proving it y = cisx y' = icisx = iy dy=iy (dx) dy/(iy) = dx integrate and find constant you get e^ix = cosx + i sinx
there is the noob way of proving it y = cisx y' = icisx = iy dy=iy (dx) dy/(iy) = dx integrate and find constant you get e^ix = cosx + i sinx
A AAEldar Premium Member Joined Apr 5, 2010 Messages 2,246 Gender Male HSC 2011 Oct 21, 2011 #23 b3kh1t said: aiight cool but where does the e come from or is this a rule?? Click to expand... ? Google it. Euler's Formula. Easy enough to find a proof of it as well.
b3kh1t said: aiight cool but where does the e come from or is this a rule?? Click to expand... ? Google it. Euler's Formula. Easy enough to find a proof of it as well.
B b3kh1t Member Joined May 21, 2010 Messages 271 Gender Male HSC 2011 Oct 21, 2011 #24 AAEldar said: ? Google it. Euler's Formula. Easy enough to find a proof of it as well. Click to expand... Aiight thanks mate
AAEldar said: ? Google it. Euler's Formula. Easy enough to find a proof of it as well. Click to expand... Aiight thanks mate
