Direction derivative

[JasCL]

Hi, I am a bit stuck in this question; functions of several variables. I know how to find that partial derivative, but from there I am ensure of how to proceed. Thanks for any help.

Partial derivatives
x: 13+10yz
y: 10xz
z: 10xy

Find the directional derivative of the function

at the given point P(3, -2, 1) in the given direction u = (1, 2, -1).
Round up your answers to 3 decimal places.

=

 

[Deleted member 4993]

Hi, I am a bit stuck in this question; functions of several variables. I know how to find that partial derivative, but from there I am ensure of how to proceed. Thanks for any help.

Partial derivatives
x: 13+10yz
y: 10xz
z: 10xy

Find the directional derivative of the function

at the given point P(3, -2, 1) in the given direction u = (1, 2, -1).
Round up your answers to 3 decimal places.

=

Hint: go to : http://mathworld.wolfram.com/DirectionalDerivative.html

What are your thoughts?

Please share your work with us ...even if you know it is wrong

If you are stuck at the beginning tell us and we'll start with the definitions.

You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL:

http://www.freemathhelp.com/forum/th...Before-Posting