A radioactive radiation with strength 
is suddenly discharged. A man standing at the point 
must run away, in the direction of maximum decrease of radiation.
A) What direction should he choose?
B) The man decided to run along the path 
. Find the directional derivative of 
in the direction of the path at 
.
Definitions:
Genetic Relationship
The connection between organisms based on the similarity of their DNA sequences.
Nonshared Environmental
Influences that result in differences among siblings, including experiences outside the family that are not shared by other siblings.
Family Vacation
A period of leisure and travel with family members away from the usual residence, intended for relaxation and enjoyment.
Familial Status
Refers to an individual's position or role within a family, including aspects such as being a parent, child, or sibling.
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