Purpose: This integral calculator allows the user to enter a function and immediately see the definite integral within given limts, the antiderivative with some assumed initial condition, and the area under the curve.

Restrictions on Use: None

General Information:

1. The default values for the applet numerically integrates the odd function sin(x) from x=-3.14159 to x=3.14159. The numeric result does not exactly match the analytic result of zero. The funtion sin(x) is shown in the top graph, and the area under the curve is shaded in. The antiderivative (cos(x)+C) is shown, with an initial condition of cos(0)+C=0, or C=-1.
2. Enter your function with an independant variable of x in the bottom right text area.
3. Use two astericks to represent exponentiation (i.e. x² would be entered x**2).
4. Most mathematical functions are supported (for example. sin(x), cos(x+2.0), exp(-x**2)).
5. The rand function is entered with parentheses and a null argument (rand(0)) and returns a value between 0 and 1.

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