JEE AdvancedMathematicsDifferential EquationsNumerical+4 / −1
Let be the solution of the differential equation satisfying . Then the value of is .
Numerical answer
View written solutionFree
Correct answer: 0.7TO0.8
- Given differential equation
We need to find
- Rewrite the equation
Divide by :
This suggests the substitution
Then
Substitute into the differential equation:
So,
Hence,
- Integrate
Integrating both sides,
Now,
Therefore,
Use the initial condition . At ,
So,
Thus,
Rearrange:
Since ,
- Compute and
For ,
so
For ,
so
- Evaluate the required expression
Now,
Hence,
Cancel :
So the required value is
\boxed{\frac34}}
Since this is an integer-type question with range-style stored answer, numerically
- Comparison with stored correct answer
Stored correct answer: 0.7TO0.8
Our derived value is , which lies in this range. So it agrees.
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