Question Number 48321 by tanmay.chaudhury50@gmail.com last updated on 22/Nov/18
Commented by tanmay.chaudhury50@gmail.com last updated on 22/Nov/18
$${above}\:{questions}\:{based}\:{on}\:\bigtriangleup\:{and}\:{E}\:{operator} \\ $$$${for}\:{example}\: \\ $$$$\bigtriangleup{u}_{\mathrm{1}} ={u}_{\mathrm{2}} −{u}_{\mathrm{1}} \\ $$$${and}\:{Eu}_{\mathrm{1}} ={u}_{\mathrm{2}} \\ $$