Thread: Finding T.P using differentiation

Hi
I am having trouble finding the turning point and POI for this function:


i know that the asymptote is x=-8 and y=0.

x an y intercepts are 0.

this is what i get for the first derivative:
This is where i am stuck.

P.S

Originally Posted by Paymemoney

Hi
I am having trouble finding the turning point and POI for this function:


i know that the asymptote is x=-8 and y=0.

x an y intercepts are 0.

this is what i get for the first derivative:
This is where i am stuck.

P.S

Well to find the turning points, just solve for

and for the points of inflection just find the 2nd derivative of position i.e.
and let that = 0 and solve for x. Then sub back in value(s) of x and find y

These formula's should be in your class notes... and i would hazard a guess that this is pre-uni calculus...?

i have found the turning point from the derivative . values
However i cannot seen to get a Point of Inflection value.