Question: Please help me check my work and also help me with question 3. Thanks a lot! 1) Determine whether the given differential equation is exact

Please help me check my work and also help me with question 3. Thanks a lot!

1) Determine whether the given differential equation is exact . If it is exact , solve it ( 5 x + Hy ) dx + ( 4x - 84 ) dy = 0 FF ( x , y ) = 3 x 2+ 4 4x - 24 + C 2 ) Find the general solution of the given differential equation . using an integrating factor x2 dy + x4 =1 y( x ) = C+ en 1x 1 X 3) solve the given differential equation by using an appropriate substitution dy - 2 + Vy- 28 + 3 4 ) Solve the given second-order differential with initial conditions 4 - 34 - 28 4 = 0 ; 4 60 ) =0, 4(0) = 22 " ylc ) = del - 2e - 4 x

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