Casio CFX9850GBPLUS - Page 99

20070201
u Applications of Differential Calculations
• Differentials can be added, subtracted, multiplied or divided with each other.
Therefore:
f
'
(
a
) +
g
'
(
a
),
f
'
(
a
)
×
g
'
(
a
), etc.
• Differential results can be used in addition, subtraction, multiplication, and division, and in
functions.
2
×
f
'
(
a
), log (
f
'
(
a
)), etc.
• Functions can be used in any of the terms (
f ( x ), a , tol ) of a differential.
dd
–––
f
(
a
)=
f
'(
a
), –––
g
(
a
)=
g
'(
a
)
dx dx
dd
–––
f
(
a
)=
f
'(
a
), –––
g
(
a
)=
g
'(
a
)
dx dx
d
––– (sin
x
+ cos
x
, sin0.5, 1
E
- 8), etc.
dx
d
––– (sin
x
+ cos
x
, sin0.5, 1
E
- 8), etc.
dx
2-5-4
Numerical Calculations
# You cannot use a differential, quadratic
differential, integration, Σ , maximum/minimum
value, Solve, RndFix or log ab calculation
expression inside a differential calculation
term.
# Pressing A during calculation of a differential
(while the cursor is not shown on the display)
interrupts the calculation.
# Always use radians (Rad mode) as the angle
unit when performing trigonometric differentials.