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I need help with the following 2 Questoins Solve cos 2x = 2 + cox x for 0<x<180 Diffferentiate y = ln[(x+1)^3/sqr rt (x-1)] Thanks in advance

I'm stuck with this air resistance question for physics (moving about) A car travels along a staright road with a constant speed of 60 km/h. If the driving force is a constant 1800 N and the road friction is 300 N, what is the force of the air resistance? How would you work out air...