# turning point problem

• Sep 29th 2010, 08:07 AM
mastermin346
turning point problem

A curve with gradient function $2x-\frac{16}{x^3}$ has a turning point at $(p,5)$

a)Find the value of $p$

very appreciate with who can solve this problem.
• Sep 29th 2010, 08:27 AM
Quote:

Originally Posted by mastermin346

A curve with gradient function $2x-\frac{16}{x^3}$ has a turning point at $(p,5)$

a)Find the value of $p$

very appreciate with who can solve this problem.

Set the gradient function or dy/dx be 0.
• Sep 29th 2010, 08:30 AM
mastermin346
can u do with step by step sir??i get the anwer but my answer not correct!
• Sep 29th 2010, 02:09 PM
mr fantastic
Quote:

Originally Posted by mastermin346
can u do with step by step sir??i get the anwer but my answer not correct!