A quick check-up on directional derivatives

Thread starter Char. Limit
Start date Dec 12, 2010
Tags

Derivatives

Dec 12, 2010

Char. Limit

Gold Member

Just a quick question...

To calculate a directional derivative of f(x,y) at the point \vec{u} in the direction \hat{v}, can I just use the formula...

\nabla f(\vec{u}) . \hat{v}?

It would be so easy.

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Dec 12, 2010

Astronuc

Staff Emeritus

Science Advisor

Gold Member

Hint - http://mathworld.wolfram.com/DirectionalDerivative.html

Dec 12, 2010

Char. Limit

Gold Member

Thanks!

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