How do you find the exact relative maximum and minimum of the function of #f(x) = 4x+6x^-1#?
1 Answer
Find the critical numbers. Test the critical numbers. Evaluate
Explanation:
This is a good example to use the second derivative test for.
So
And
We can save ourseles some work evaluating the function by noting that the function is odd. So
# = 2sqrt2sqrt3+2sqrt3sqrt2#
# = 4sqrt6# .
and a relative minimum of