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PAGE: 169SET: ExercisesPROBLEM: 59
Please look in your text book for this problem Statement

The power output function is .

Where   is electromotive force  volts.

               is resistance  ohms.

So .

When  then .

When  then .

To find the maximum output power , derivative the power function and equate to zero.

Apply derivative with respect to .

Equate it to zero .

Critical number is .

When  then .

When  then .

So the maximum out power occurs when .

The maximum out power lies in the interval  (  amp fuse ).

The power output will not increase by replacing the  amp fuse with  amp fuse.

Because the output power decreases for .

The maximum out power is .



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