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The function for a current is /(t) = 9cos 120nt where / is the current, in amperes, and t is the time in seconds. a) Find the current when t = 6 s. b) The electromotive force, E(t), in a circuit, is given in volts by finding the first derivative of the current function /(t). Find the function for the electromotive force E(t).

The function for a current is /(t) = 9cos 120nt where / is the current, in amperes, and t is the time in seconds. a) Find the current when t = 6 s. b) The electromotive force, E(t), in a circuit, is given in volts by finding the first derivative of the current function /(t). Find the function for the electromotive force E(t).

Calculus: Early Transcendentals
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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assigi The function for a current is /(t) = 9cos 120nt where / is the current, in amperes, and t is the time in seconds.
Transcribed Image Text:assigi The function for a current is /(t) = 9cos 120nt where / is the current, in amperes, and t is the time in seconds.
The function for a current is /(t) = 9cos 120nt where / is the current, in amperes, and t is the time in seconds. a) Find the current when t = 6 s. b) The electromotive force, E(t), in a circuit, is given in volts by finding the first derivative of the current function /(t). Find the function for the electromotive force E(t).
Transcribed Image Text:The function for a current is /(t) = 9cos 120nt where / is the current, in amperes, and t is the time in seconds. a) Find the current when t = 6 s. b) The electromotive force, E(t), in a circuit, is given in volts by finding the first derivative of the current function /(t). Find the function for the electromotive force E(t).
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