Casio CFX-9850G PLUS, User'S Manual & Technical Reference

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59
Input 3 as point
a
, which is the differential coefficient point.
d,
Input 6 as
n
, which is final boundary.
g)
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 the final boundary value
n
and the closing parenthesis can be omitted.
• Discontinuous points or sections with drastic fluctuation can adversely affect
precision or even cause an error.
k k
k k
k
Quadratic Differential Applications
• Arithmetic operations can be performed using two quadratic differentials.
Therefore:
f ''
(
a
)
+ g''
(
a
),
f ''
(
a
)
×
g''
(
a
), etc.
• The result of a quadratic differential calculation can be used in a subsequent
arithmetic or function calculation.
2
×
f '' ( a ), log ( f '' ( a ) ), etc.
• Functions can be used within the terms (
f ( x ) , a , n
) of a quadratic differential
expression.
• Note that you cannot use a Solve, differential, quadratic differential, integration,
maximum/minimum value or
Σ
calculation expression inside of a quadratic
differential calculation term.
• Use only integers within the range of 1 to 15 for the value of final boundary
n
.
Use of a value outside this range produces an error.
• You can interrupt an ongoing quadratic differential calculation by pressing the
A
key.
• Always use radians (Rad Mode) as the angle unit when performing trigono-
metric quadratic differentials.
Quadratic Differential Calculations
3 - 3
d 2
–––
(sin
x
+ cos
x
, sin 0.5), etc.
dx 2
d
2
d
2
––– f ( a ) = f '' ( a ), ––– g ( a ) = g'' ( a )
dx
2
dx
2