Numeric Command

CAS Syntax

Numeric[ <Expression> ]

Tries to determine a numerical approximation of the given expression. The number of decimals depends on the global rounding you choose in the Options Menu.

Example:

Numeric[3 / 2] yields 1.5.

Numeric[ <Expression>, <significant figures> ]

Tries to determine a numerical approximation of the given expression, using the entered number of significant figures.

Example:

Numeric[sin(1), 20] yields 0.84147098480789650665.

Note: If you don't specify enough digits then you can get an apparently wrong answer due to floating point cancelation for example
Numeric[-500000000/785398163*sin(785398163/500000000)*1258025227.19^2+500000000/785398163*1258025227.19^2,10] will give 0 but
Numeric[-500000000/785398163*sin(785398163/500000000)*1258025227.19^2+500000000/785398163*1258025227.19^2,30] will give 0.318309886345536696694580314215