By the proof given in Equn.4.4,
→ (12.1)
This equation is similar to the form
→ (12.2)
where
For the differential equation 12.2, the criterion of exactness is given by
i.e.,
→ (12.3)
Similarly starting from Equn.3.4,
it can be proved that
→ (12.4)
Last Modified on: 04-Feb-2022
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