- #1
JC3187
- 15
- 0
Hi guys,
I am confused from what I know the max. value of directional derivative at a point is the length of the gradient vector ∇f or grad. f?
Why does the answer in my book of a question say that
Max. val of Duf = (√3145)/5
when ∇f = (56/5) i- (3/5) j
?
Thanks
I am confused from what I know the max. value of directional derivative at a point is the length of the gradient vector ∇f or grad. f?
Why does the answer in my book of a question say that
Max. val of Duf = (√3145)/5
when ∇f = (56/5) i- (3/5) j
?
Thanks