Casio CFX-9850GB PLUS, Руководство пользователя

Страница: 101 / 600

20070201
<Math>
A4
(MATH)
5
(
d
2
/
dx
2
)
v M d e
+e vx + v -g e d w
u
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
, tol ) of a quadratic differential
expression.
d
2
d
2
––– f ( a ) = f '' ( a ), ––– g ( a ) = g'' ( a )
dx
2
dx
2
d
2
d
2
––– f ( a ) = f '' ( a ), ––– g ( a ) = g'' ( a )
dx
2
dx
2
d
2
––– (sin x + cos x , sin 0.5, 1
E
- 8), etc.
dx
2
d
2
––– (sin x + cos x , sin 0.5, 1
E
- 8), etc.
dx
2
2-5-6
Numerical Calculations
# In the Math input mode, the tolerance value is
fi xed at 1
E
-10 and cannot be changed.
# The rules that apply for linear differential also
apply when using a quadratic differential
calculation for the graph formula (see page
2-5-2).
# Inaccurate results and errors can be caused
by the following:
- discontinuous points in
x
values
- extreme changes in
x
values
- inclusion of the local maximum point and
local minimum point in
x
values
- inclusion of the infl ection point in
x
values
- inclusion of undifferentiable points in
x
values
- differential calculation results approaching
zero
# You can interrupt an ongoing quadratic
differential calculation by pressing the
A
key.
# Always use radians (Rad mode) as the angle
unit when performing trigonometric quadratic
differentials.
# You cannot use a differential, quadratic
differential, integration,
Σ
, maximum/minimum
value, Solve, RndFix or log ab calculation
expression inside of a quadratic differential
calculation term.
# With quadratic differential calculation,
calculation precision is up to fi ve digits for the
mantissa.