The equation is false, because 3

<span>4.794579</span>
the reciprocal is 15 by 12
Split up the interval [0, 3] into 3 equally spaced subintervals of length
. So we have the partition
[0, 1] U [1, 2] U [2, 3]
The left endpoint of the
-th subinterval is

where
.
Then the area is given by the definite integral and approximated by the left-hand Riemann sum

The answer is C.
Explanation: There are 3 x variables and on the other side you see 11.
So the answer is 3x = 11