numerical approximation to an integral
leftsum(f(x), x=a..b, n)
algebraic expression in x
variable of integration
left end of the interval
right end of the interval
(optional) indicates the number of rectangles to use
Important: The student package has been deprecated. Use the superseding command Student[Calculus1][RiemannSum] instead.
The function leftsum computes a numerical approximation to a definite integral using rectangles. The height of each rectangle (box) is determined by the value of the function at the left side of each interval.
Four equal-sized intervals are used by default.
A graph of the approximation can be obtained by the Maple procedure leftbox.
The command with(student,leftsum) allows the use of the abbreviated form of this command.
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