- #1

Amaelle

- 310

- 54

- Homework Statement
- calculate the directional derivative

- Relevant Equations
- directional derivative

Good day

I have a problem regarding the directional derivative (look at the example below)

in this example, we try to find the directional derivatives according to the two approaches ( the definition with the limit and the dot product of the vector gradient and the vector direction)

in this example, we got totally different results?

why?

many thanks in advance!

I have a problem regarding the directional derivative (look at the example below)

in this example, we try to find the directional derivatives according to the two approaches ( the definition with the limit and the dot product of the vector gradient and the vector direction)

in this example, we got totally different results?

why?

many thanks in advance!