# Difference between revisions of "IntegralBetween Command"

##### Command Categories (All commands)

IntegralBetween[Function f, Function g, Number a, Number b]
Returns the definite integral of the difference f(x) ‐ g(x) in the interval [a, b] with respect to the main variable.
Note: This command also shades the area between the function graphs of f and g.
IntegralBetween[Function f, Function g, Number a, Number b, Boolean Evaluate]
Returns the definite integral of the difference f(x) ‐ g(x) in the interval [a, b] with respect to the main variable and shadows the related area when Evaluate = true. In case Evaluate = false the related area is shaded but the integral value is not calculated.

## CAS Syntax

IntegralBetween[ Function f, Function g, Number a, Number b]
Returns the definite integral of the difference f(x) ‐ g(x) in the interval [a, b] with respect to the main variable.
Example:
IntegralBetween[sin(x), cos(x), π / 4, π * 5 / 4] yields 2 \sqrt{2}.
IntegralBetween[ Function f, Function g, Variable t, Number a, Number b ]
Returns the definite integral of the difference f ‐ g in the interval [a, b] with respect to the given variable t.
Example:
IntegralBetween[a * sin(t), a * cos(t), t, π / 4, π * 5 / 4] yields 2 \sqrt{2} a.
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