Casio fx-9750G PLUS - Manual (Page 87)

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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