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posted by  Subbie on 11/4/2009 9:24:55 AM  |  status: Closed  |  Earned Karma: 0

What's total charge of device and power consumed at t=1?

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Electrical Engineering Fundamentals of Electric Circuits (4th) by Alexander, Sadiku 1 14 11/4/2009 at 11:00:00 PM
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posted by max_36 on 11/4/2009 1:08:27 PM  |  status: Live
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  Okay here are  the explanination  please  if you have any dobuts in my calculation   let me know :
 first  I used double angle identity to figure out cos2t. then I   substituted 1 and change calculation mode to  radian. for  calculator  changes from degree to rad . There fore after making the trig identity and changing calculator mode to  rad . the rest is  algebra .
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posted by Subbie on 11/4/2009 1:38:53 PM  |  status: Live
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This looks good , but what's the total charge of device then? What do they want me to calculate? I'm confused here.
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