/explore
|
You are here 
|
www.johndcook.com | ||
| | | | |
www.oranlooney.com
|
|
| | | | | One thing you may have noticed about the trigonometric functions sine and cosine is that they seem to have no agreed upon definition. Or rather, different authors choose different definitions as the starting point, mainly based on convenience. This isn't problematic or even particularly unusual in mathematics - as long as we can derive any of the other forms from any starting point, it makes little theoretical difference which we start from since they're all equivalent anyway. | |
| | | | |
www.mathplanet.com
|
|
| | | | | ||
| | | | |
corbettmaths.com
|
|
| | | | | The Ultimate GCSE Foundation Maths Revision Video and Booklet - Edexcel AQA OCR - Corbettmaths | |
| | | | |
cp4space.hatsya.com
|
|
| | | In the early 1930s, Pascual Jordan attempted to formalise the algebraic properties of Hermitian matrices. In particular: Hermitian matrices form a real vector space: we can add and subtract Hermitian matrices, and multiply them by real scalars. That is to say, if $latex \lambda, \mu \in \mathbb{R}$ and $latex A, B$ are Hermitian matrices, then... | ||
