The work W done by an electromagnet varies according to W=36t^3-t^2. Find the power dW/dt at t=1/4s. The answer i got was 6.25. All that i did was take the derivative of 36t^3-t^2 and then plugged in (1/4) for the t. Am i correct in doing this????
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Originally Posted by navynukejones The work W done by an electromagnet varies according to W=36t^3-t^2. Find the power dW/dt at t=1/4s. The answer i got was 6.25. All that i did was take the derivative of 36t^3-t^2 and then plugged in (1/4) for the t. Am i correct in doing this???? Looks good:
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