2019-01-27T19:04:52ZFluxBBhttp://www.mathisfunforum.com/viewtopic.php?id=24774Your answer is correct, but you have made a mistake and misunderstood the book. The point of inflection is not x in fact any point is an ordered pain (x,y) so the value of x which you have found is the first component of the point of inflection and the second component (which is y) can be found by substituting x=6 in the original equation, so we have:
hence the point of inflection is (6,2/9) which is the answer found in your book. I hope that will help.]]>http://www.mathisfunforum.com/profile.php?id=2122842019-01-27T19:04:52Zhttp://www.mathisfunforum.com/viewtopic.php?pid=406882#p406882x = 6, y = 2/9 is a point of inflexion. Cannot find any others.
Bob
]]>http://www.mathisfunforum.com/profile.php?id=676942019-01-27T18:56:39Zhttp://www.mathisfunforum.com/viewtopic.php?pid=406880#p406880Finding point of inflection Fx= 2/x-4/x^2 I take second derivative tesr that is 4(x-6)/x^4 And point of inflection is 6 but in book there is two point of inflection 2/9 ,6]]>http://www.mathisfunforum.com/profile.php?id=2128082019-01-27T14:15:03Zhttp://www.mathisfunforum.com/viewtopic.php?pid=406877#p406877