This page illustrates interval arithmetic through a Java-script Interval Calculator.
The calculator performs interval arithmetic operations and computers interval
version of mathematical functions. This project was completed as part of a National
Science Foundation Research Experience for Undergraduates Project. Although the
calculator works correctly, work is still being done to extend the calculator's
interface and capabilities.
Definitions of Input Boxes: Input: - is the box where numbers are entered into the calculator Expressions: - is the box where expression like a+b are inputed
Definitions of Buttons: Compute - computes the expression inputed in the Expressions box ClrX - clears the top set (x) of intervals ClrY - clears the bottom set (y) of intervals Enter - places the value in the Input Box into the next available spot AC - Clears all values Top - places the result into the X boxes +/- - used to input negative numbers E - used to input scientific notation C - clears the Input Box ^ - raise the X values by the power of Y NegX - switches the X values and turns them into the opposite value NegY - switches the Y values and turns them into the opposite value log - computes the common log of the X values sqrt - computes the square roots of the X values 1/x - reciprocal of the X values 1/y - reciprocal of the Y values e^X - raises e by the power of the X values ln - computes the natural log to the X values max - finds the maximum range min - finds the minimum range ABS - finds the absolute values IX - the intercept point IH - the convex hull