So in the infinite square well, the eigenfunctions are ## \psi_n (x) = \sqrt{\dfrac{2}{a}} \sin \left( \dfrac{n \pi}{a} x \right) ##(adsbygoogle = window.adsbygoogle || []).push({});

Each state is orthogonal to each other, and so ## \displaystyle \int \psi_m (x) ^* \psi_n (x) dx = \delta_{mn} ##

Does this also hold if they were cosines?

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Quick question about Kronecker delta function

Loading...

Similar Threads - Quick question Kronecker | Date |
---|---|

B A quick question about entanglement | Dec 17, 2016 |

Schrödinger's cat - quick question | Feb 1, 2016 |

Quick question about experiments done on spin detection | Mar 16, 2015 |

Quick questions regarding BRA KET notation | Jan 29, 2015 |

Quick question on notation of the Hamiltonian | Dec 23, 2014 |

**Physics Forums - The Fusion of Science and Community**