First Derivative Calculations - Casio FX-CG20 AU User Manual

• The lower limit and upper limit specify the range of the solution. You can input a value or an
expression as the range.
• The following functions cannot be used within any of the arguments.
(, FMin(, FMax(, Σ(
2 x 2
Solve(, d /d
Up to 10 calculation results can be displayed simultaneously in ListAns format.
• The message "No Solution" is displayed if no solution exists.
• The message "More solutions may exist." is displayed when there may be solutions other
than those displayed by SolveN.
Example
k First Derivative Calculations
To perform first derivative calculations, first display the function analysis menu, and then input
the values using the syntax below.
<Math input/output mode>
K4(CALC)2(d/d
or
4(MATH)4(d/d
<Linear input/output mode>
K4(CALC)2(d/d
a
is the point for which you want to determine the first derivative.
d/dx ( f (x) , a) ⇒ d/dx ( f (x) , a) ⇒
The derivative is defined as:
' '
f (a) = lim –––––––––– ––– f (a) = lim –––––––––– –––
A x →0 A x →0
x x
2
To solve – 5 – 6 = 0
K4(CALC)5(SolveN)
vx-fv-g)w
J
x f x a
) ( )e
x f x a
) ( )e
x f x a )
) ( ),
d d
f (a) f (a)
dx dx
f (a + A x) – f (a) f (a + A x) – f (a)
A x A x
2-28
[OPTN]-[CALC]-[d/d
x
]