How do you find points of inflection and determine the intervals of concavity given #y=3/(x^2+4)#?
1 Answer
Below
Explanation:
For stationary points,
ie
Test
Therefore, it is a maximum and concave down at
For point of inflexion,
Test when
Therefore, there is a change in concavity so there is a point of inflexion at
Test when
Therefore there is a change in concavity so there is a point of inflexion at