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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- Apr 22nd 2008, 09:36 AMnavynukejonesRate related derivative problem.
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???? - Apr 22nd 2008, 02:09 PMelizsimca