a) Determine whether the given differential equation is exact.If it is exact, solve it. (If it is not exact, enter NOT.)
(2xy2 − 5) dx + (2x2y + 4) dy = 0
b) Solve the given differential equation by finding, as inExample 4 of Section 2.4, an appropriate integrating factor.
(6 − 20y +e−5x)dx − 4 dy = 0
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