Let f (x) =6 x9 - 10 x8 + 4 x - 12. Find the derivative of the function. f' (x) =A mass at the end of a vertical spring is stretched beyond its natural lenght and is released. The position of the object (in centimeters) at time t (in seconds) is given by the function .5 (t) = 5 cos (2 t). Find the velocity of the object 4 seconds after it is released. Round your answer to two decimal places and write out units using / to represent per. Make sure to use radian mode. The velocity of the function 4 seconds after the object is released is Number Units Let g (x) = -6 x +11 x + 4 Find the derivative of the function. 24 g' (x) =