If f(t) is the distance function then f'(t) is the velocity function. Take the derivative and evaluate it when t = 7
Please post your calculations so we can see where you need help.
For some reason, this is one of only two questions I'm stumped on right now.
I've calculated the distance @ 21/10. But when I follow the examples in Stewart Calculus ed:7 I can't work out how to calculate the velocity.
Time = 7, distance = 21/10. I'm not even close to the answer, or even sure how I'm supposed to go about the problem.
Not asking for it to be done, just a step in the right direction.
cheers, I missed the concept for this one early on and was off on a tangent.
Sometimes these are so easy once you know what to do.
I basically did [g(f')- f(g')] / g^2 plugging in values and it was straight forward.
ended up with 9/100.