Find the Amplitude, Period and Phase Shift Of $y = 3 \cos ( 2 x )$

question 13

Essay

Find the amplitude, period and phase shift of $y = 3 \cos ( 2 x )$ and sketch its graph.

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Definitions:

Perpetual Inventory System

An accounting method that records inventory purchases or sales immediately through the use of computerized point-of-sale systems and enterprise asset management software.

FIFO Inventory

An inventory valuation method that assumes goods are sold in the order in which they were acquired, with the oldest inventory items sold first.

Inventory Balance

The total value of all the goods that a company has in stock at any given time.

Periodic Inventory System

An accounting method where inventory levels and the cost of goods sold are determined at the end of the accounting period.