CASTI-89 TITANIUM · CALC89
impDif(
Computes the derivative dy/dx of an equation that defines y implicitly in terms of x.
Syntax
impDif(equation, var, depVar[, order])
- Group
- Calculus
- Arguments
- Takes the equation, the independent variable, the dependent variable and an optional order.
- Availability
- Included
- Menu path
- F3 Calc ▸ impDif(
Example
| Input | Result |
|---|---|
| impDif(x^2+y^2=1,x,y) | −x/y |
Typing impDif(x^2+y^2=1,x,y) on the home screen and pressing ENTER returns −x/y.
Keystrokes on the TI-89 Titanium
F3▼×12ENTER
The same key sequence inserts impDif( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
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