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Solve the differential equation `(1 + cos 2x) + (1- cos 2y) (dx)/(dy) = 0` |
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Answer» `(1+cos 2x) dy + (1- cos 2y) dx = 0` `rArr (dy)/(1-cos 2y) + (dx)/(1+cos 2x) = 0` Integrating both sides `rArr (1)/(2)int (1)/(sin^(2)y) dx + (1)/(2) int (1)/(cos^(2)x)dx = C_(1)` `rArr int cosec^(2) y dy + int sec^(2) x dx = C_(1)` `rArr -cot y + tan x = C` `rArr tan x - cot y = C` which is the general solution of the given differential equation. |
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