Function Formula:
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Definition: This calculator evaluates mathematical functions of the form f(x) = equation for a given x value.
Purpose: It helps students, engineers, and mathematicians quickly compute function values without manual calculation.
The calculator uses the formula:
Where:
Explanation: The calculator substitutes the x value into the equation and computes the result.
Details: Function evaluation is fundamental in mathematics, physics, engineering, and data analysis for modeling relationships between variables.
Tips: Enter the x value and the equation using standard mathematical notation (+, -, *, /, ^ for power). Example: "x^2 + 3*x - 5".
Q1: What operations are supported?
A: Basic arithmetic (+, -, *, /), exponents (^), parentheses, and most standard math functions when properly implemented.
Q2: Can I use trigonometric functions?
A: In an enhanced version, yes (sin, cos, tan, etc.), but they must be properly parsed and evaluated.
Q3: How precise are the calculations?
A: Results are calculated with floating-point precision (about 15 decimal digits).
Q4: Can I plot the function?
A: This version calculates single points. A graphing version could be developed to show the function curve.
Q5: What if I get an error?
A: Check your equation syntax. Make sure to use * for multiplication (e.g., 3*x not 3x).