Q. 74.5( 4 Votes )
Solve the differential equation 
Answer :
given: 
To find: solution of the given differential equation
Assuming x+y=t
Differentiating both sides with respect to x
Substituting 
in the above equation
Re-writing the equation as
Integrating both sides
Formula: 
Substituting t = x + y
is the solution of the given differential equation
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