You are going to do 6 rectangles between x = 0 and x = 3
for LRAM, you use the height at the left.
(I am not going to calculate them for you)
for the heights
The base of each rectangle will be 3/6 = .5
add those all up and multiply by .5
Now to do it for RRAM
then add those 6 up and multiply by .5
o do it for the middle points use
f(1 1/4) =
f(2 3/4 )=
and again multiply by .5, the base of each rectangle
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