Use logarithmic differentiation to find the derivative of the function. y = (cos(7x))x

He concluded that a heavier object dropped from the same height as a lighter object will land

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)