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Solve the differential equation by substitution suggested by equation. Show complete solution.


(dy/dx) = 2y/x + cos(y/x2)


Obtain the general solution of the following differential equations.

1. 𝑑𝑦 + 𝑦𝑒x𝑑π‘₯ = 𝑒x𝑑π‘₯

2. π‘₯𝑑𝑦 = (𝑒x βˆ’ 2𝑦)𝑑π‘₯

Obtain the particular solution satisfying the indicated conditions.

3. (2𝑦 βˆ’ π‘₯3)𝑑π‘₯ = π‘₯𝑑𝑦, 𝑦(2) = 4


Obtain the general solution of the following equations.

1. (4π‘₯𝑦 + 3𝑦2 )𝑑π‘₯ + π‘₯(π‘₯ + 2𝑦)𝑑𝑦 = 0

2. (3π‘₯3 + 𝑦2 )𝑑π‘₯ βˆ’ 2π‘₯𝑦𝑑𝑦 = 0


Obtain the particular solution satisfying the indicated conditions.

3. (4π‘₯3 βˆ’ 3𝑦2 )𝑑π‘₯ + 6π‘₯𝑦𝑑𝑦 = 0, 𝑦(βˆ’1) = 0


determine the exactness and obtain the general solutions.

1. (π‘₯ + 𝑦2 )𝑑π‘₯ + (2π‘₯𝑦 + 𝑦2)𝑑𝑦 = 0

2. (2π‘₯𝑦3 + π‘₯2 )𝑑π‘₯ + (3π‘₯2𝑦2 + 𝑦)𝑑𝑦 = 0

3. (𝑒2y + π‘₯)𝑑π‘₯ + (2π‘₯𝑒2y + 1)𝑑𝑦 = 0Β 


Solve the following initial value problem



Ut(x,t)=10Uxx(x,t) -10

U(-1,t)=U(1,t) Ux(-1,t)=Ux(1,t) t>0

Ux(x,0)=x+1 -1

Solve the following initial value problem


Ut(x,t)=10Uxx(x,t) -10

U(-1,t)=U(1,t) Ux(-1,t)=Ux(1,t) t>0

Ux(x,0)=x+1 -1



(1+x)dy/dx-xy=x+x^2


Β Find the eigenvalues and eigenfunctions of the following Sturm-Liouville probelm (e^(2x)y')' + e^(2x) (Ξ» + 1)y = 0; y(0) = 0 = y(Ο€).Β 


Β Evaluate (π‘«πŸ + πŸ”π‘« + πŸ—)π’š = 𝒆 βˆ’πŸ‘π’• βˆ’ πŸ‘π’„π’π’”πŸ’π’• + π’π’π’ˆ5


Solve the following IVP by power series method

xyβ€²β€² + yβ€² + 2y = 0, y(1) = 2,yβ€²(1) = 4.