Differential Calculations - Canon F-788DX Operation Manual

Example: For the equation Y = 5x
if x = 2 or x = 7.
Operation
2
5
7
! The stored expression will be cleared as you start a new
calculation, change into another mode, or turn off the calculator.

Differential Calculations

Press
To perform a differential calculation, you have to input the expression
in the form of:
• The differential expression must contain the variable x.
• "a" is the differential coefficient.
• " x" is the change interval of x (calculation precision).
Example: To determine the derivative at point x = 10,
the function f(x) = sin(3x + 30).
Operation
30 10
! You can leave out the
calculator will automatically substitute a value for
! The smaller the entered value
will be and the result is more accurate; the bigger the entered
value x is, the shorter the calculation time will be and the result
will be comparatively less accurate.
! Discontinuous points and extreme changes in the value of x can
cause inaccurate results or errors.
! When performing differential calculation with trigonometric
function, select radian (Rad) as the angle unit setting.
! Log b, i–Rand, Rec ( and Pol ( functions can't join to differential
a
calculation.
! During the busy calculation, the calculator will display the message
[PROCESSING]
5
1
to enter COMP mode for differential calculation.
differential expression
3
1 8
x in the differential expression and the
- 102 -
2 – 2x +1, calculate the value of Y
Display (Upper)
2 –
Y = 5x 2x +1
X?
2 –
Y = 5x 2x +1
2 –
Y = 5x 2x +1
Display (Upper)
d/dx ( sin ( 3x
x is, the longer the calculation time
Display (Lower)
116.
232.
a x
x = 10 -8 , for
Display (Lower)
0.026179938
x.
0.
0.