To know how to make the matrix calculation in a single step,
   • Matrix Calculation in the calculator ...  

To know how to find inverse of 2x2 matrix in the calculator,
https://www.youtube.com/watch?v=4wq_q...

Same beam has been analysed by Clapeyron's Theorem of Three Moments
   • Problem No 2 on  Clapeyron's Theorem ...  

Same beam has been analysed by Moment Distribution Method,
   • Moment Distribution Method for Beam A...