The graph of is shown below. Let
be an antiderivative of
. Then,
equals
point of inflection at and
, a local maximum at
and a local maximum at
point of inflection at and
, a local minimum at
and a local maximum at
point of inflection at , a local maximum at
and a local minimum at
point of inflection at , a local minimum at
and a local maximum at
Since, is the antiderivative of
.
at changes sign from +ve to -ve
Hence, has maxima at
at does not change sign
Point of inflection
at changes sign from -ve to +ve
minima at
.
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