Let $z = \ln \sqrt { x ^ { 2 } + y ^ { 2 } }$

question 18

Essay

Let $z = \ln \sqrt { x ^ { 2 } + y ^ { 2 } }$ , $x = r \cos \theta$ , and $y = r \sin \theta$ . Use the chain rule to find $\frac { \delta z } { \delta r }$ and $\frac { d z } { \delta \theta }$ .

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Mind's Operations

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Functionalism

A perspective in social science and psychology that focuses on the roles or functions of behaviors and mental processes in individuals and society.

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in biology, refers to the process by which organisms adjust to changes in their environment to survive and reproduce, while in psychology, it can denote adjustments in cognitive or behavioral processes.

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