Casio fx-9750G PLUS User Manual

Page 89

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61

u

u

u

u

u

To perform an integration calculation

Example

To perform the integration calculation for the function shown
below, with a tolerance of “tol” = 1

E

- 4

1

5

(2x

2

+ 3x + 4) dx

Input the function

f

(x)

.

A

K4

(CALC)4(

dx

)cvx+dv+e,

Input the start point and end point.

b,f,

Input the tolerance value.

bE-e)w

• In the function

f

(x)

, only X can be used as a variable in expressions. Other

variables (A through Z,

r

,

θ) are treated as constants, and the value currently

assigned to that variable is applied during the calculation.

• Input of “tol” in Gauss-Kronrod Rule, “

n

” in Simpson’s Rule, and closing

parenthesis with both rules can be omitted. If you omit “tol”, the calculator
automatically uses a value of 1

E

- 5. In the case of “

n

”, the calculator automati-

cally selects the most appropriate value.

• Integration calculations can take a long time to complete.

k

k

k

k

k

Application of Integration Calculation

• Integrals can be used in addition, subtraction, multiplication or division.

a

b

f (x) dx +

c

d

g(x) dx, etc.

• Integration results can be used in addition, subtraction, multiplication or

division, in functions.

2

×

a

b

f(x) dx, etc. log (

a

b

f(x) dx), etc.

• Functions can be used in any of the terms

( f(x), a, b, n)

of an integral.

cos 0.5

(sin x + cos x) dx =

(sin x + cos x, sin 0.5, cos 0.5, 5)

sin 0.5

• Note that you cannot use a Solve, differential, quadratic differential, integration,

maximum/minimum value or

Σ calculation expression inside of an integration

calculation term.

Integration Calculations

3 - 4

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