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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 (Δx).

(d/dx) expression a Δx


Example: To determine the derivative at point x = 2 for the function y = 3x2 - 5x + 2, when the increase or decrease in x is Δx = 2 × 10-4 (Result: 7)

  • (d/dx) 3(X)5(X)2224
  • 7.

Note

Differential calculations can be performed in the COMP Mode only.

You can omit input of Δx, if you want. The calculator automatically substitutes an appropriate value for Δx 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.

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