## Hellman-Feynman Theorem and its Applications – Quantum Mechanics

Hellman-Feynman Theorem investigates how the energy of a system varies as the Hamiltonian varies. If a system is characterised by a Hamiltonian that…

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# BragitOff.com

## READ-LEARN-BRAG!

# Month: April 2017

## Hellman-Feynman Theorem and its Applications – Quantum Mechanics

## Expectation Value of 1/r for Hydrogen using Virial Theorem -Quantum Mechanics

## Polynomial Fitting – JAVA Code/Program (works on Android as well)

## C++ Program for Determinant of a Matrix using Gauss Elimination

## How to add Data to GraphView from Arrays? [SOLVED] – Android Studio

## How to trigger a button click on press of the ‘DONE’/’ENTER’ key on Keyboard? [SOLVED]

## How to use a custom font for a TextView? [SOLVED] – Android Studio

## How to add activity transitions programatically? [SOLVED] – Android Stduio

## How to check the visibility of a view? [SOLVED] – Android Studio

Hellman-Feynman Theorem investigates how the energy of a system varies as the Hamiltonian varies. If a system is characterised by a Hamiltonian that…

Read MoreIn this post we will be evaluating the expectation value of 1/r : using the Virial Theorem, that we proved and talked about…

Read MoreOkay, so the following is a code for fitting a polynomial to a given set of data using the Least Squares Approximation Method(Wikipedia). Formula…

Read MoreSo I wrote a code for Gaussian Elimination to solve a system of linear equations a while ago. But recently learned that it…

Read MoreThanks to the amazing library by jjoe, you can plot graphs easily using GraphView. The documentation provided is really helpful. However, some users…

Read MoreLet’s say you have a form that asks the user to enter their name and age. And there is a submit button below…

Read MoreFirst of all make sure that you have an assets folder in your project with this location. Then create a folder named ‘Fonts’…

Read MoreStarting from Android 5.0, you can add enter and exit animations for activities. These are also called Activity transitions. An enter transition determines…

Read MoreView.getVisibility() gets the visibility of a View, but its not a simple true/false. A view can have its visibility set to one of…

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