Function re
Get the real part of a complex number.
For a complex number a + bi
, the function returns a
.
For matrices, the function is evaluated element wise.
Syntax
re(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 real part of x |
Examples
var a = complex(2, 3);
re(a); // returns number 2
im(a); // returns number 3
re(complex('-5.2i')); // returns number 0
re(complex(2.4)); // returns number 2.4