Assertion: directional derivative | /r/HasProperty | the best linear approximation
Facets:
value: in that direction
type: LOCATION
value: to f
type: OTHER
value: at that point
type: TEMPORAL
Source sentences:
text: When f is a function from an open subset of Rn to Rm, then the directional derivative of f in a chosen direction is the best linear approximation to f at that point and in that direction.