The Sales of a Mature Product (One Which Has Passed $\left. \mathrm { S } ^ { \mathrm { t } } \right) = \mathrm { S } _ { 0 } \mathrm { e } ^ { - a t }$

question 18

Multiple Choice

The sales of a mature product (one which has passed its peak) will decline by the function $\left. \mathrm { S } ^ { \mathrm { t } } \right) = \mathrm { S } _ { 0 } \mathrm { e } ^ { - a t }$ , where $\mathrm { t }$ is time in years. Find the sales after 8 years if $\mathrm { a } = 0.18$ and $\mathrm { S } _ { 0 } = 48,500$ .

• A) 58,065
• B) 5746
• C) 245,075
• D) 11,491

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Definitions:

I/O Module

A plug-in assembly, containing two or more identical input or output circuits, that contain the connections between a processor and connected devices.

Analog Modules

Components of an automation system that handle analog signals, converting between physical real-world analog inputs and outputs and their digital representations.

Process Field Devices

Instruments and sensors located in the field or the physical process area, used for measuring and controlling variables such as temperature and pressure.

Cross-Talk Interference

A phenomenon in which a signal transmitted in one circuit or channel of a transmission system creates an undesired effect in another circuit or channel.