CASTI-89 TITANIUM · CALC89
d(
Differentiates an expression symbolically with respect to a variable. With an order argument it returns higher derivatives.
Syntax
d(expr, var[, order])
- Group
- Calculus
- Arguments
- Takes the expression, the variable and an optional order, which defaults to 1.
- Availability
- Included
- Menu path
- F3 Calc ▸ d(
Example
| Input | Result |
|---|---|
| d(x^3,x) | 3·x2 |
Typing d(x^3,x) on the home screen and pressing ENTER returns 3·x2.
Keystrokes on the TI-89 Titanium
2NDd
The same key sequence inserts d( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
Related commands
- deSolve(Solves first and second order ordinary differential equations symbolically.
- dominantTerm(Returns the term of an expression that dominates near a point, for example as the variable tends to infinity.
- euler(Solves a differential equation numerically with Euler's method and returns a matrix with the variable values in the first row and the solution values in the second.
- fMax(Returns the value of the variable at which an expression reaches its maximum, as a condition such as x=1.
- fMin(Returns the value of the variable at which an expression reaches its minimum, as a condition such as x=2.
- impDif(Computes the derivative dy/dx of an equation that defines y implicitly in terms of x.
- limit(Computes the limit of an expression as the variable approaches a point, including ∞.
- nDeriv(Approximates the derivative of an expression numerically with a central difference quotient.