What's your favorite illustration of the usefulness of complex numbers?
-
?? i did not even use the derivative of sin(x) nor cos(x) in this at all.. that's the whole point ..
. But when you derive in both sides of the formule, you already know the derive of the Sin(x) and Cos(x), and after you use it to “prove” the derive of Sin(x) and Cos(x). Its a circular reasoning that obviously is invalid.look closer .. the only thing that was used was d/dx e^(a x) = a e^(a x)
-
-
Ah ok you multiply by “i”
. SorryThanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.