How to prove Euler's formula: $e^{it}=\\cos t +i\\sin t$?
Aug 28, 2010 · One cannot "prove" euler's identity because the identity itself is the DEFINITION of the complex exponential. So really proving euler's identity amounts to showing that it is the only …
Extrinsic and intrinsic Euler angles to rotation matrix and back
Extrinsic and intrinsic Euler angles to rotation matrix and back Ask Question Asked 10 years, 8 months ago Modified 9 years, 7 months ago
Does Euler's formula give $e^ {-ix}=\cos (x) -i\sin (x)$?
Apr 13, 2018 · I like the fact that your answer does not depend on knowing that sine is an odd function. It appears that when using Euler to prove sine is odd one must make use of complex conjugates. …
How to convert Euler angles to Quaternions and get the same Euler ...
Oct 29, 2018 · 19 I am rotating n 3D shape using Euler angles in the order of XYZ meaning that the object is first rotated along the X axis, then Y and then Z. I want to convert the Euler angle to …
A sequence based on Euler's totient function that always converges to ...
Nov 8, 2025 · A sequence based on Euler's totient function that always converges to prime numbers Ask Question Asked 2 months ago Modified 2 months ago
Where to find English translations of Euler's collected works?
Jun 15, 2020 · I will highly appreciate if someone can provide me the link to the book or link to the paper where I can find the following papers $(90-94)$ with English translation. Any help would be appreciated.
$\\sin(x)$ infinite product formula: how did Euler prove it?
I know that sin(x) sin (x) can be expressed as an infinite product, and I've seen proofs of it (e.g. Infinite product of sine function). I found How was Euler able to create an infinite product for sinc by using its …
The "Euler Product formula" for general multiplicative functions
Jul 13, 2024 · The "Euler Product formula" for general multiplicative functions Ask Question Asked 1 year, 6 months ago Modified 1 year, 6 months ago
Euler-Lagrange equation in matrix form - Mathematics Stack Exchange
May 13, 2024 · The Euler-Lagrange equation seems fundamental, and mappings or vector functions are prevalent. Thus, I find it peculiar that I haven't seen so far a convenient matrix form of the E-L. See …
general topology - Mismatching Euler characteristic of the Torus ...
Jun 10, 2024 · You should use Euler formula on a triangulation if you want to compute the euler characteristic. One easy triangulation of the torus can be obtained as following: Obtained by …