How do you know when to differentiate when it doesn't specify to do so? Especially in exam questions.
if it asks for the tangent of a function it means you have to differentiate
or if it asks for the slope
Rate of change, find dy/dx, slope, tangent, rate ALL of these terms mean Differentiate..
Questions 7-9 On P1 especially usually it could be related to filling a cone etc.. or Blood pressure ones are popular. the main term used for those is the rate of change or rate something increases/ decreases