integrate?
the question is asking for a rate of change ... sounds like a derivative to me.
Question asks to find the rate of atmospheric pressure changing for a rocket rising vertically at 5km/s when at an altitude of 1km.
Given the relationship of atmospheric pressure (in milibars) at an altitude of x kilometres is given by 1000(0.88)^x.
I just can't see how to differentiate the function. Anyone?