Note
• This function can be used with any of the following calculator apps: Calculate,
Statistics, Distribution, Spreadsheet, Table, Equation, Inequality, Matrix, Vector, Ratio.
Input Syntax
The input syntax depends on the Input/Output setting on the SETTINGS
menu, as shown in the table below.
Input/Output setting Input Syntax
MathI/MathO or MathI/DecimalO
LineI/LineO or LineI/DecimalO
* tol specifies tolerance, which becomes 1 × 10
-10
when nothing is input for
tol.
Integration Calculation Precautions
• When using a trigonometric function in f(x), specify "Radian" as Angle
Unit on the SETTINGS menu.
• A smaller tol value increases precision, but it also increases calculation
time. When specifying tol, use a value that is 1 × 10
-22
or greater.
• Depending on the content of f(x), positive and negative values within
the region of integration or the region of integration, large error may
result in calculated integration values. (Examples: When there are
parts with discontinuous points or abrupt change. When the integration
interval is too wide.) In such cases, dividing the integration interval into
multiple parts and then performing calculations may improve calculation
accuracy.
Integration Calculation Example
(ln(x), 1, e) = 1 (tol specification omitted.)
(Input/Output: MathI/MathO)
– [Func Analysis] > [Integration(∫)]
(ln) 1 (e)
48
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