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49 lines
1.0 KiB
Markdown
49 lines
1.0 KiB
Markdown
# Function im
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Get the imaginary part of a complex number.
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For a complex number `a + bi`, the function returns `b`.
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For matrices, the function is evaluated element wise.
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## Syntax
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```js
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math.im(x)
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```
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### Parameters
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Parameter | Type | Description
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--------- | ---- | -----------
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`x` | Number | BigNumber | Complex | Array | Matrix | Boolean | null | A complex number or array with complex numbers
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### Returns
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Type | Description
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---- | -----------
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Number | BigNumber | Array | Matrix | The imaginary part of x
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## Examples
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```js
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var a = math.complex(2, 3);
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math.re(a); // returns Number 2
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math.im(a); // returns Number 3
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math.re(math.complex('-5.2i')); // returns Number -5.2
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math.re(math.complex(2.4)); // returns Number 0
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```
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## See also
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[re](re.md),
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[conj](conj.md),
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[abs](abs.md),
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[arg](arg.md)
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