Question

find the directional
derivatives
of
an
Find the
functions f=
(x² + y)
which is
making an angle
30°​

Answer 1

Step-by-step explanation:

To find the directional derivative in the direction of the vector (1,2), we need to find a unit vector in the direction of the vector (1,2). We simply divide by the magnitude of (1,2). u=(1,2)∥(1,2)∥=(1,2)√12+22=(1,2)√5=(1/√5,2/√5).