Question

i am having presentation on "surface and line integral" tomorrow but have never been taught before i read it at wiki but its difficult to understand now need help in understanding it thanks

Answer 1

the theme is parameterization of the surface or area you are integrating over

Answer 2

the theme is paramterization of the surface or line you are integrating on, and subbing that into the x,y, and z in the integral. Not really a topic I can teach well in a few minutes, so here's what I consider a good starting point http://tutorial.math.lamar.edu/Classes/CalcIII/CalcIII.aspx

Answer 3

its line integral and surface both
but problem is parameterization be x(s, t), what are these x s and t and secondly the derivatives in formula i am not understanding it because its completely new topic to me

Answer 4

s and t are the new variables that the surface will be represented with. what s and t actually are depends on the coordinates you are using.
if you don't know what a partial derivative is, which is what it sounds like, then you have a lot to learn before you can do surface integrals effectively.
you should perhaps start from the beginning: http://tutorial.math.lamar.edu/Classes/CalcIII/CalcIII.aspx

Answer 5

brother i know derivates and integration infact multiple integration as well but normally we are taught only how to solve questions with formula
but here the problem is i have to relate my formula with diagram too, which is bothering me and secondly how does it come like that way
i am looking at the books that you mention
and thanks for youi time brother

Answer 6

here, look at examples 1 and 2 to see all the possibilities of what the two variables for the parametric surface could be:
http://tutorial.math.lamar.edu/Classes/CalcIII/ParametricSurfaces.aspx

you can see sometimes they are r and theta, sometimes two cartesian variables like x and y, or theta and phi for spherical coordinates, etc.

hope that helps a little, good luck!

Answer 7

thanks

Answer 8

that should say "some of the possibilities", not all
welcome