CASCALC89 COMMAND · NOT ON THE TI-89
nDerivative(
Computes the numerical derivative of an expression at a given value of the variable.
Syntax
nDerivative(expr, var=value[, order])
- Group
- Calculus
- Arguments
- Takes the expression, the variable with its value written as var=value, and an optional order.
- Availability
- Included
- Origin
- TI-Nspire CAS style command; the TI-89 Titanium handheld does not have it
Example
| Input | Result |
|---|---|
| nDerivative(x^3,x=2) | 12.0 |
Typing nDerivative(x^3,x=2) on the home screen and pressing ENTER returns 12.0.
Related commands
- nfMax(Finds the location of a maximum of an expression numerically within an interval.
- nfMin(Finds the location of a minimum of an expression numerically within an interval.
- nInt(Approximates a definite integral numerically.
- normalLine(Returns the equation of the normal line to the graph of an expression at a point, the line perpendicular to the tangent.
- rk23(Solves a differential equation numerically with an adaptive Runge Kutta method and returns a matrix with the variable values in the first row and the solution values in the second.
- series(Returns a power series expansion of an expression up to a given order.
- tangentLine(Returns the equation of the tangent line to the graph of an expression at a point.
- taylor(Returns the Taylor polynomial of an expression up to a given order, around 0 or around a chosen point.