JEE MainMathematicsDifferential EquationsMCQ+4 / −1
Let be the solution of the differential equation Then is equal to :
- A
- B
- C
- D
View written solutionFree
Correct answer: A
-
Given differential equation
We need to find .
-
Rewrite in standard linear form
Divide both sides by (for ):
This is a linear differential equation of the form
where
-
Find the integrating factor
Now,
so
(since , ).
-
Multiply the equation by the integrating factor
Observe that the left side is:
because
Hence,
-
Integrate both sides
Using
we get
Therefore,
-
Use the condition to determine the solution
Since the solution is given for , it must be defined at as well. But , so for to remain finite at , the numerator must also vanish at .
At :
so
Thus,
-
Find
Since ,
-
Check options
- A: ✓
- B: ✗
- C: ✗
- D: ✗
Therefore, the correct answer is A.
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