Posted by david on Sunday, April 7, 2013 at 8:47pm.
find the coordinates for all points of inflection . find all intervals on which function has upward or downward concavity?
i found to be 2/5

ap calculus  bobpursley, Sunday, April 7, 2013 at 8:57pm
Wouldn't one need a function?

ap calculus  david, Sunday, April 7, 2013 at 9:10pm
oh!
the function is (25x)^3
i got the double derivative
15(25x)(5)