CASTI-89 TITANIUM · CALC89
fMin(
Returns the value of the variable at which an expression reaches its minimum, as a condition such as x=2. Used for optimization problems in calculus.
Syntax
fMin(expr, var)
- Group
- Calculus
- Arguments
- Takes the expression and the variable.
- Availability
- Pro feature in Calc89
- Menu path
- F3 Calc ▸ fMin(
Example
| Input | Result |
|---|---|
| fMin(x^2-4x,x) | x=2 |
Typing fMin(x^2-4x,x) on the home screen and pressing ENTER returns x=2.
Keystrokes on the TI-89 Titanium
F36
The same key sequence inserts fMin( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
Related commands
- 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.
- nDerivative(Computes the numerical derivative of an expression at a given value of the variable.
- 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.