## vera_ewing one year ago Math question

1. vera_ewing

2. vera_ewing

@Michele_Laino Is the rate of change going to be negative?

3. anonymous

If the value of the function f(x) is increasing, then the rate of change is positive.

4. Michele_Laino

the requested rate R, is given by the subsequent computation: $\Large R = \frac{{f\left( {\pi /2} \right) - f\left( 0 \right)}}{{\left( {\pi /2} \right) - 0}} = ...?$

5. anonymous

Is the f(x) increasing or decreasing between x=0 and x=pi/2?

6. vera_ewing

Increasing?

7. Michele_Laino

yes! R is positive

8. vera_ewing

So 8/pi is the answer?

9. Michele_Laino

that's right!

10. vera_ewing

Thank you, Michele! :)

11. Michele_Laino

thanks! :)