Real problems

[Analysis]

Dear all

I am searching the materials that is related with practical problems.
Particularly differentiation and integration equations
How does one get into solve to use this equations....
Also what are the applications,results how much accuracy with practical ...etc

Practical books or useful sites are welcome.....

Prakash

[chaoseverlasting]

Check out Kreyszig (Adv. Engg. Math). It has whole chapters dedicated to solving differential equations that you'll encounter in fluid dynamics, mechanics, etc. You'd probably find what you're looking for in it.