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The power output P (in W) of a certain 9.0-V battery is given by P = 9.0l - 6.0l2, where I is the current (in

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The power output P (in W) of a certain 9.0-V battery is given by P = 9.0l - 6.0l2, where I is the current (in A). Find the current for which the power is a maximum. Find the derivative of the function to be maximized. dP_ dl ' The power is a maximum when the current is D Y (Type an integer or a decimal.)

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