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Differential Calculations
The procedure described below obtains the derivative of a function.
Three inputs are required for the differential expression: the function of
variable
x , the point ( a ) at which the differential coefficient is calculated,
and the change in
x (Δ x ).
(d/dx) expression a Δ x
Example: To determine the derivative at point x = 2 for the function y = 3
x
2
- 5 x + 2, when the increase or decrease in x is Δ x = 2 × 10
-4
(Result:
7)
(d/dx) 3 (X) 5 (X)
2 2 2 4 7.
Note
• Differential calculations can be performed in the COMP Mode only.
• You can omit input of Δ x , if you want. The calculator automatically substitutes an
appropriate value for Δ
x if you do not input one.
• Discontinuous points and extreme changes in the value of x can cause inaccurate
results and errors.
• Select Rad (Radian) for the angle unit setting when performing trigonometric function
differential calculations.
Rectangular-Polar Coordinate
Conversion
Pol converts rectangular coordinates to polar coordinates, while Rec
converts polar coordinates to rectangular coordinates.
(1) Rectangular Coordinates (Rec)
(2) Polar Coordinates (Pol)
Specify the angle unit before performing calculations.
Calculation result
θ
is displayed in the range of -180° <
θ
≦ 180°.
Calculation results are automatically assigned to variables E and F.
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