# Integral 指令

##### 指令分類 （所有指令）

Integral[ <Function> ]

Integral[ <Function>, <Start x-Value>, <End x-Value> ]

Integral[ <Function>, <Start x-Value>, <End x-Value>, < Boolean Evaluate> ]

## CAS 視窗

Integral[ <Function> ]

Integral[ <Function>, <Start x-Value>, <End x-Value> ]

Integral[ <Function>, <Start x-Value>, <End x-Value>, < Boolean Evaluate> ]

Integral[Function]
Yields the indefinite integral for the given function.

`Integral[x³]` yields x⁴ / 4 .
Integral[ <Function>, <Variable> ]
Returns the partial integral of the function with respect to the variable.

`Integral[x³+3x y, x]` yields (x² (x² + 6y)) / 4 .
Integral[Function, Number a, Number b]
Returns the definite integral of the function in the interval [a , b].

Integral[Function, Number a, Number b, Boolean Evaluate]
Returns the definite integral of the function in the interval [a , b] 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

Integral[ Function f]
Yields the indefinite integral for the given function.

Integral[Function f, Variable t]
Indefinite integral with respect to variable t.

Integral[Function, Number a, Number b]
Returns the definite integral of the function in the interval [a , b].

Integral[Function f, Variable t, Number a, Number b]
Definite integral from a to b with respect to variable t.

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