Correct Answer :
Solution :
The correct answer is 9.
Based on the image provided, we are given the following second-order linear ordinary differential equation:
with the initial conditions:
This is a homogeneous Cauchy-Euler differential equation. To find the general solution, we assume a solution of the form . Substituting and its derivatives into the differential equation yields the auxiliary (characteristic) equation:
Simplifying the characteristic equation:
Thus, the roots of the equation are:
The general solution is a linear combination of the two independent solutions:
Now, we differentiate the general solution to apply the derivative initial condition:
Applying the first initial condition :
Applying the second initial condition :
Adding Equation 1 and Equation 2:
Substituting back into Equation 1:
So, the particular solution to the differential equation is:
Finally, we calculate the value of at :
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