HELP ME FIND THE EQUATION TO THIS GRAPH!?

This is an AC Circuit problem and the answer is already given, I just want to know the solution and I'm stuck at how to form the equation on this graph! In case you want to know the problem. 

Find the rms values of the current waveform of  the figure. IF the current flows through a 9 ohms resistor, calculate the average power absorbed by the resistor.

answer: 9.238A and 768W

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  • 2 months ago

    RMS = The square root of [1/(1-0) * integral (16t)²] = 256*(1/3)t³ evaluated from 0 to 1 = √(256/3) = 9.238

    P = 9.238²*9Ω = 768W

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