Question: identify whether the following equations are exact or need an integrating factor 6. (3x tan y - 2y)dx + (x (sec y) + 4xy3

identify whether the following equations are exact or need an integrating factor

identify whether the following equations are exact or need an integrating factor 6. (3x tan y - 2y)dx + (x (sec y) + 4xy3 + 3xy) = 0 7. (3y2 cot x + sin x cos x )dx- 2ydy 0 8. (2xy -e2y)dx + (x + xe2y - y)dy = 0

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