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+1 vote
21.9k views
in Differential equations by (36.3k points)

If y = y(x) and it follows the relation x cos y + y cos x = π, the value of y'' (0) is 

(a) 1 

(b) –1 

(c) π 

(d) –π

1 Answer

+2 votes
by (33.0k points)
selected by
 
Best answer

Answer is (a) 1

Explanation:

The given relation is

x cos y + y cos x = π

Put x = 0, then y = π

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