The General Term of a Sequence Is Given $$a _ { n } = ( - 1 ) ^ { n } ( 2 n ) ; s _ { 4 }$$

question 133

Multiple Choice

The general term of a sequence is given. Find the indicated partial sum.
- $$a _ { n } = ( - 1 ) ^ { n } ( 2 n ) ; s _ { 4 }$$

• A)20
• B)16
• C)-20
• D)4

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Definitions:

PLC Operator Interface Device

Hardware or software that allows human operators to interact, monitor, and control the PLC and the processes it governs.

Discrete Output Interface Module

A hardware component designed to control and operate individual digital output signals in an industrial or embedded system.

Output Voltages

The electrical voltages produced by a system or device, often as a result of processing input signals or data.

ON/OFF Switching

ON/OFF Switching refers to a basic control mechanism that allows electrical or electronic devices to be turned on or off with a switch.