Q.

The order and degree of the differential equation [1+(dydx)2]2=d2ydx2 respectively, are:

1 1, 2  
2 2, 2  
3 2, 1  
4 4, 2  

Ans.

(3)

Ans.        2, 1

Explanation:

We have,

             [(1+dydx)2]=d2ydx2

So,         order = 2

and    degree = 1