Casio fx-9860G AU f(x)dx +.....+ ∫b f(x)dx, f(x)dx + ∫x2, ∫b f(x)dx = ∫x1, ∫ab f(x)dx = ∫ac f(x)dx + (–∫cb f(x)dx)

2-5-9

Numerical Calculations

Note the following points to ensure correct integration values.

(1)When cyclical functions for integration values become positive or negative for different divisions, perform the calculation for single cycles, or divide between negative and positive, and then add the results together.

Positive part (S)

Negative part (S)

∫ab f(x)dx = ∫ac f(x)dx + (–∫cbf(x)dx)

Positive part (S) Negative part (S)

(2)When minute fluctuations in integration divisions produce large fluctuations in integration values, calculate the integration divisions separately (divide the large fluctuation areas into smaller divisions), and then add the results together.

∫b f(x)dx = ∫x1		f(x)dx + ∫x2	f(x)dx +.....+ ∫b f(x)dx
a	a	x1	x4

# Pressing A during calculation of an integral	# An error (Time Out) occurs whenever no
(while the cursor is not shown on the display)	solution that satisfies the tolerance value can
interrupts the calculation.	be obtained.
# Always use radians (Rad mode) as the angle
unit when performing trigonometric
integrations.

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