Question

answer check?


What is the rate of change for f(x) = 7 sin x − 1 on the interval from x = 0 to x = pi over 2 ? (1 point)


14 over pi
pi over 14
pi over 4
4 over pi
my answer is pi over 14. thank you for any help!!

Answer 1

I got 14 over pi :S

Answer 2

It sounds like you have a step mixed up. You should end up at 14/pi


f(x) = 7sin(x) - 1
f(0) = 7*sin(0)-1
f(0) = -1


f(x) = 7sin(x) - 1
f(pi/2) = 7sin(pi/2) - 1
f(pi/2) = 6

change in y = 6 - (-1) = 7
change in x = pi/2 - 0 = pi/2

slope = (change in y)/(change in x) = 7/(pi/2) = 14/pi

Answer 3

oh, ok!! thank you guys so much!! @Sila1453 @jim_thompson5910

Answer 4

no problem

Answer 5

You're welcome