mathjs/docs/reference/functions/im.md

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Function im #

Get the imaginary part of a complex number. For a complex number a + bi, the function returns b.

For matrices, the function is evaluated element wise.

Syntax #

math.im(x)

Parameters #

Parameter	Type	Description
x	number | BigNumber | Complex | Array | Matrix	A complex number or array with complex numbers

Returns #

Type	Description
number | BigNumber | Array | Matrix	The imaginary part of x

Examples #

var a = math.complex(2, 3);
math.re(a);                     // returns number 2
math.im(a);                     // returns number 3

math.re(math.complex('-5.2i')); // returns number -5.2
math.re(math.complex(2.4));     // returns number 0

See also #

re, conj, abs, arg