Find the Period and Amplitude of the Function $y = 3 \cos 2 x$

question 42

Multiple Choice

Find the period and amplitude of the function $y = 3 \cos 2 x$ .

• A)period: \(2 \pi\) ; amplitude: 6
• B)period: \(2 \pi\) ; amplitude: 3
• C)period: \(\pi\) ; amplitude: 3
• D)period: \(\pi\) ; amplitude: 6
• E)period: \(\frac { \pi } { 2 }\) ; amplitude: 3

---

Definitions:

Antarctica

The Earth's southernmost continent, containing the geographic South Pole, and characterized by its vast ice sheets.

Electrical History

The study and documentation of the development and changes in electrical technology and its uses over time.

Past Participle

A grammatical form of a verb used to indicate a completed action, often functioning as an adjective or forming perfect and passive verb tenses.

Livermore Residents

Individuals who live in Livermore, a city located in Alameda County, California, known for its wine industry, historic sites, and scientific research facilities.