Integration limits

1. Feb 22, 2014

Miraj Kayastha

is the upper limit always greater than the lower limit in integration?

what should be the limits if we need to calculate total work done in bringing a mass from infinity to distance r from earth.

2. Feb 22, 2014

pwsnafu

$\int_a^b f(x) \, dx = - \int_b^a f(x) \, dx$.

3. Feb 22, 2014

PhysicoRaj

$\int$r

4. Mar 11, 2014

Boson

There is decrease in potential energy of system. So, negative work is done. -{infinity to r}