b

z – {MATH}1(dX) iS0(X)),1,1i(%)1))E

ARemarks

Use of ( is supported in the COMP, SD, REG, and EQN Modes only.

The following functions cannot be input for the f(x), a, b, and tol parameters: (, d/dx(, d2/dx2(, Σ(. In addition, the Pol( and Rec( functions, and the random number functions cannot be input for the f(x) parameter.

The integration result will be negative when the limit of region of integration parameters

are within the range a < x < b and f(x) < 0. Example: (0.5X2 – 2, –2, 2) = –5.333333333

In the case of integration of a trigonometric function, select Rad for the angle unit.

Integration calculations can take a long time to complete.

Specifying a smaller value for the tol parameter tends to improve precision, but it also causes the calculation to take more time. Specify a tol value greater than 1 × 10–14.

You will not be able to input a tol value while using natural display.

The type of function being integrated, positive and negative values within the region of integration, and the region of integration being used can cause large error in integration values and errors.

You can interrupt an ongoing integration calculation operation by pressing o.A Tips to for Successful Integration Calculations

For periodic functions, and for positive and negative f(x) values due to the region of integration being used

/Divide the integration into parts for each period, or between positive and negative parts, obtain integration values for each, and then add the values.

SPositive

S Negative

bc

a f(x)dx = a f(x)dx + (–cf(x)dx)b

Positive Part

Negative Part

(S Positive)

(S Negative)

For widely fluctuating integration values due to a minutely shifting region of integration

/Divide the integration interval into multiple parts (in a way that breaks areas of wide fluctuation into small parts), perform integration on each part, and then combine the results.

E-44