Exam 2 Question

Question 8 VCAA 2006 exam 2

The average value of the function y=cos (x) over the interval [0, pie/2] is

A. 1/pie

B. pie/4

C. 0.5

D. 2/pie

E. pie/2

Does this have to be done by hand, can it be done using cas or graphically?

Itute gives some wierd explanation that i dont even think is for the same question lol

Q8 y = log3 (x); after reflection in the x-axis, y = − log3 (x);

after translation by 5 units up and translation 2 units right,

log3 ( 2) 5 y = − x − + .

(Will we need to know how to do this by hand also?)