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If a curve y = y(x) passes through the point 1, 2        and satisfies the differential equation (7x 4 cot y – e x cosec y) dx dy = x 5 , x  1, then at x = 2, t he value of cos y is :

1. 2 2e e 64 
2. 2 2e e 64 
3. 2 2e e 128 
4. 2 2e e 128 

Correct answer: 2 2e e 128 

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