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Solution


Q.

Order and degree of the differential equation rdrdθ+cosθ=5 are:
1 order 2, degree 1  
2 order 2, degree 2  
3 order 1 and degree 1  
4 order 2, degree not define  

Ans.

(3)

Ans.     order 1 and degree 1

Explanation:

In rdrdθ+cosθ=5, order 1 and degree =1.