Find the directional derivative of the function 
at the point 
in the direction of the unit vector that makes the angle 
with the positive x-axis.
Definitions:
Global/Specific
This term contrasts between broad, overarching concepts (global) and distinct, precise elements (specific).
External Attributions
The process of attributing the cause of one's own or others' behavior to external factors, circumstances, or situations outside one's control.
Control
The ability to sway or guide the actions of individuals or the direction of happenings.
Luck
The concept of experiencing positive, negative, or unexpected outcomes without a clear cause or reason.
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