Question

what is the definition of integration and fr what does the symbol stand for?

Answer 1

The concept of Integral varies a lot; it may have a geometrical interpretation, an analytical interpretation, etc. Personally, I think that it's more intuitive to think of an integral as a sum of very small pieces, infinitesimal pieces. It's just a Riemmanian sum evaluated as n goes to infinity.
The symbol is a S from old typography. S for "sum".

Answer 2

Riemann sum*

Answer 3

y do u diifrentiate bfre integrating then and gve proper def^n pls

Answer 4

i'm not sure what you're asking. do you have any experience with calculus?

Answer 5

hw much experience do u hav???
i am doin it frm mre than 3 yrs just ans or say u dnt knw

Answer 6

here's one definition, given a function defined on a closed interval, the integral of that function is defined as the unique number I such that for all partitions P, this inequality holds:
L(f, P) <= I <= U(f, P)
where L is the lower sum and U is the upper sum. Sufficient?