Question

The voltage of the power supply in a AC-DC coupled circuit is given by the function v(t) = 130sin5t + 18, where t is time, in seconds, and V is the voltage, in volts, at time t.

a) find the maxiumum and mimimum voltages and the times at which they occur

Answers

Reiny
Always check if your previous post has been answered before posting the same question again.

http://www.jiskha.com/display.cgi?id=1299856899

The max/min can actually be calculated quite easily by just noting the property of the sine and cosine curves

No matter what the input, sinx has a max of +1 and a min of -1
so sin(5t) has a max of 1 and a min of -1
130sin(5t) has a max of 130 and a min of -130
130sin(5t) + 18 has a max of 148 and a min of -112

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