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Mathematics 20 Online
OpenStudy (anonymous):

does ds always stand for arc length when used in an integral?

OpenStudy (anonymous):

infintesimal arc length

OpenStudy (anonymous):

hey! me again. :)

OpenStudy (anonymous):

Test day

OpenStudy (anonymous):

what does that mean?

OpenStudy (anonymous):

yeah, in 1hr

OpenStudy (anonymous):

small pieces of arc lenght s is ds

OpenStudy (anonymous):

ok, other than surface integral, what other integral uses ds a lot?

OpenStudy (anonymous):

line integral

OpenStudy (anonymous):

it is dS in surface integral, ds in line integral

OpenStudy (anonymous):

i thought line integral used it, but i couldn't find it in any of my homework. so in order to solve line integral using ds, i have to take the square root of x' and y' right? or do i also add 1?

OpenStudy (anonymous):

square root of (x')^2 and (y')^2

OpenStudy (anonymous):

ok, cool, that is what i needed to know. Thanks! :)

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