Is the rate of change ever zero

Reference no: EM131336476

The voltage, V , in volts, in an electrical outlet is given as a function of time, t, in seconds, by the function V = 156 cos(120πt).

(a) Give an expression for the rate of change of voltage with respect to time.

(b) Is the rate of change ever zero? Explain.

Reference no: EM131336476

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