A handyman knows from experience that his 29-foot ladder rests in its most stable position when the distance of its base from a
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The summand (R?) is missing, but we can always come up with another one.
Divide the interval [0, 1] into subintervals of equal length
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Let's consider a left-endpoint sum, so that we take values of where
is given by the sequence
with . Then the definite integral is equal to the Riemann sum