1.

Let y=f(x) be satisfying differential equation e^(-x^(2))(dy)/(dx)=2xy^(2) such that f(0)=(1)/(2) Q. Which of the following statement is correct about f(x)?

Answer»

`f(x)` is unbounded
`f(x)` is bijective
`f(x)` is odd
None of these.

Solution :`int(DY)/(y^(2))=int2xe^(x^(2))dx`
`-(1)/(y)=E^(x^(2))+C` POINT `(0.(1)/(2))` lies on the curve
`implies-2=1+C`
`impliesC=-3`
Hence `-(1)/(y)=e^(x^(2))-3`
`impliesf(x)=(1)/(3-e^(x^(2)))`
Hence, `f(x)` is even which means that it cannot be objective Also, denominator of `f(x)` becomes zero which implies that it cannot be bounded.


Discussion

No Comment Found

Related InterviewSolutions