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Multiple Integration

To compute a multiple integral such as

use

int( x+y^2, y=0..x );
int( ", x=1..2 );
Sometimes Maple is unable to compute the exact value of an integral in such cases an approximate value is desired. e.g. if we need

we would use

int( sin(x+y^3), y=0..x );   Maple is unable to compute it
int( ", x=1..2 );            Maple returns the symbolic form of the integral
evalf( ", 5);                Approximate the double integral to 5 digits
If you are certain you want only the approximate value, it is faster to use Int instead of int because on using Int Maple will not attempt to compute the exact value of the integrals. Try it.



Peter Monk
Tue Aug 29 14:41:29 EDT 1995