Consider the given function.

f(x) = 3 sin(6x) text(, ) 0<=x<=(3pi)/2
(a) Find the Riemann sum with six terms, taking the sample points to be right endpoints. (Give your answer correct to six decimal places.)
R6 =

(b) Repeat part (a) with midpoints as sample points. (Give your answer correct to six decimal places.)
M6 =