Question Details

A differential equation is given as The solution of the differential equation in terms of arbitrary constants C1 and C2 is bhjvhhgghvhbjj

Options

A

B

C

D

Show Answer

Correct Answer :

Option C

y = C_1 x^2 + C_2 x + 2

Solution :

The correct answer is:
y=C1x2+C2x+2

Step-by-step Explanation:

1. Identify the type of differential equation:
From the first image, the given differential equation is:
x2d2ydx2-2xdydx+2y=4
This is a second-order Cauchy-Euler (homogeneous linear) differential equation.

2. Find the Complementary Function (yc):
For the homogeneous part, we assume a solution of the form y=xm.
Substituting y=xm, dydx=mxm-1, and d2ydx2=m(m-1)xm-2 into the homogeneous equation yields:
x2[m(m-1)xm-2]-2x[mxm-1]+2xm=0
Factoring out xm (since xm0), we obtain the auxiliary equation:
m(m-1)-2m+2=0
m2-3m+2=0
Factoring the quadratic equation:
(m-1)(m-2)=0
Thus, the roots are m=1 and m=2.
The complementary function is:
yc=C1x2+C2x

3. Find the Particular Integral (yp):
Since the right-hand side of the differential equation is a constant (4), we assume a particular solution of the form:
yp=A
where A is a constant. Taking derivatives:
dypdx=0
d2ypdx2=0
Substitute these values back into the original differential equation:
x2(0)-2x(0)+2A=4
2A=4A=2
Therefore, the particular integral is:
yp=2

4. Combine to get the Complete Solution:
The general solution is the sum of the complementary function and the particular integral:
y=yc+yp
y=C1x2+C2x+2

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