HP 33S - 8 Integrating Equations; Integrating Equations ( FN)

Integrating Equations
8–1
File name 33s-E-Manual-1008-Publication(1st).doc Page : 386
Printed Date : 2003/10/8 Size : 13.7 x 21.2 cm
8
Integrating Equations
Many problems in mathematics, science, and engineering require calculating the
definite integral of a function– If the function is denoted by f(x) and the interval of
integration is a to b, then the integral can be expressed mathematically as
∫
=
b
a
dx (x) f I
f (x)
b
x
a
I
The quantity I can be interpreted geometrically as the area of a region bounded by
the graph of the function f(x), the x–axis, and the limits x = a and x = b (provided
that f(x) is nonnegative throughout the interval of integration).
The operation
"
operation (
∫
FN) integrates the current equation with respect to
a specified variable (
∫

d_). The function may have more than one variable.
"
works only with real numbers.