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

question 8

Essay

Let $z = \sqrt { x ^ { 2 } + y ^ { 2 } }$ , $x = s ^ { 2 } - t ^ { 2 }$ , and $y = 2 s t$ . Use the chain rule to find $\frac { \delta z } { \delta s }$ and $\frac { \delta z } { \delta t }$ .

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Definitions:

Adaptive Value

The degree to which a trait or behavior helps an organism survive and reproduce in its environment.

Species

A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.

Biological Perspective

An approach to psychology focusing on the physiological causes of behavior and the impact of genetics and biological processes.

Interrelations

The way in which two or more things or phenomena are related or connected to each other.