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8. [-/0.16 Points] DETAILS .057.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The force F (in newtons) of a hydraulic cylinder in a press is proportional to the square of sec x where x is the distance (in meters) that the cylinder is extended in its cycle. The domain of F is [0, 7t/3], and F(0) = 300. (a) Find F as a function of x. F ( X ) = (b) Find the average force exerted by the press over the interval [0, 7/3]. (Round your answer to one decimal place.) F = N Need Help? Master It