Determine the Period and Amplitude Of $y = 5 \cos \left( \frac { x } { 13 } + \frac { \pi } { 5 } \right)$

question 40

Multiple Choice

Determine the period and amplitude of $y = 5 \cos \left( \frac { x } { 13 } + \frac { \pi } { 5 } \right)$ .

• A) period: \(\frac { 2 \pi } { 13 }\); amplitude: 5
• B) period: \(26 \pi\); amplitude: 5
• C) period: \(13 \pi\); amplitude: 10
• D) period: \(\frac { \pi } { 13 }\); amplitude: 5
• E) period: \(- \frac { 2 \pi } { 13 } ;\) amplitude: \(- 5\)

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Definitions:

Subliminal Perception

The process of receiving information below the level of conscious awareness, which can influence thoughts, feelings, or actions.

Adaptation

The process by which an organism or species becomes better suited to its environment through changes in characteristics or behavior.

Simple Stimuli

Basic or straightforward sensory inputs that elicit or influence behavior without complex processing.

Attention

The process of selectively concentrating on one aspect of the environment while ignoring other things, crucial for cognitive processing.