Find an Equation for the Graph $y = 2 \cos \frac { 1 } { 3 } x$

question 195

Multiple Choice

Find an equation for the graph.
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• A) \(y = 2 \cos \frac { 1 } { 3 } x\)
• B) \(y = 2 \cos 3 x\)
• C) \(y = 3 \cos \frac { 1 } { 2 } x\)
• D) \(y = 3 \cos 2 x\)

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Definitions:

A Priori Causal Theory

Knowledge or reasoning based on theoretical deduction rather than empirical evidence, used to speculate about causes.

Dependent Variable

The variable in an experiment that is being tested and measured, often seen as the outcome or effect in a study.

Independent Variable

In experimental research, the variable that is manipulated by the researcher to examine its effect on the dependent variable.

Systematic Differences

Variations that are consistent and predictable, occurring due to specific factors or conditions in a controlled manner.