Recent content by Aravind Raj

okay. thanks. I will go thru the basics again and understand the concepts instead of just memorising. :D

I'm doing my 3rd year Aeronautical engineering. The way I've been taught in my school and college, I can solve almost all the differential equations, I know the formulae ,partial differentiation etc. I don't know the physical meanings of those differentiations. so i want a book that can help me...

I know we don't multiply del and delta, typo while expressing my doubt. Thanks for explaining it. Its a part of derivation for equation of equilibrium. Book: Aircraft structures by MegsonALSO CAN U SUGGEST ANY BOOKS TO UNDERSTAND BASICS OF CALCULUS, DIFFERENTIATION ?

From the equations of equilibrium "σy+(∂σy/∂y)*(lower case delta y)" is the force acting along y direction. can anybody explain the physical meaning of the second part of the force where we multiply delta and del?