Pushkar Aditya
Last Activity: 11 Years ago
Mean Value Theorem. Let f be a function which is differentiable on the closed interval [a, b]. Then there exists a
point c in (a, b) such that
Corollary.
Let f be a differentiable function such that the derivative f ispositiveontheclosed∫erval[a,b].Thenfis∈creasingon[a,b].Letfbead⇔erentiab≤functionsuchtˆthederivativef is negative
on the closed interval [a, b]. Then f is decreasing on [a, b].
Discussion
[Using Flash]
First Derivative Test. Suppose that c is a critical point of
the function f and suppose that there is an interval (a, b) containing c.
If f (x)>0forallx∈(a,c)andf(x) < 0 for all x in (c, b), then c is a local maximum of f.
If f (x)<0forallx∈(a,c)andf(x) > 0 for all x in (c, b), then c is a local minimum of f.