Casio fx-9750G Differential/Quadratic Differential, Integration, Value - Manual (Page 11)

73
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To perform an integration calculation
Example To perform the integration calculation for the function
∫
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 number of divisions.
g)
w
• In the function f(x) , only X can be used as a variable in expressions. Other vari-
ables (A through Z, r ,
θ
) are treated as constants, and the value currently as-
signed to that variable is applied during the calculation.
• Input of n and the closing parenthesis can be omitted. If you omit n , the calculator
automatically selects the most appropriate value.
• Calculation precision is theoretically
±
1 at the least significant digit of the dis-
played result.
k k k k k Application of Integration Calculation
• Integrals can be used in addition, subtraction, multiplication and division.
Example
∫
a
b
f (x) dx +
∫
c
d
g (x) dx
• Integration results can be used in addition, subtraction, multiplication and divi-
sion, in functions.
Example 2
×
∫
a
b
f (x) dx, log (
∫
a
b
f (x) dx)
• Functions can be used in any of the terms ( f(x), a, b, n) of an integral.
Example
∫
cos 0.5
(sin x + cos x) dx =
∫
(sin x + cos x, sin 0.5, cos 0.5, 5)
sin 0.5
Integration Calculations
3 - 5