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| 2 |
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| 3 | # Function isNumeric
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| 4 |
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| 5 | Test whether a value is an numeric value.
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| 6 |
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| 7 | The function is evaluated element-wise in case of Array or Matrix input.
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| 8 |
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| 9 |
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| 10 | ## Syntax
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| 11 |
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| 12 | ```js
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| 13 | math.isNumeric(x)
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| 14 | ```
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| 15 |
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| 16 | ### Parameters
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| 17 |
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| 18 | Parameter | Type | Description
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| 19 | --------- | ---- | -----------
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| 20 | `x` | * | Value to be tested
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| 21 |
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| 22 | ### Returns
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| 23 |
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| 24 | Type | Description
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| 25 | ---- | -----------
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| 26 | boolean | Returns true when `x` is a `number`, `BigNumber`, `Fraction`, or `boolean`. Returns false for other types. Throws an error in case of unknown types.
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| 27 |
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| 28 |
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| 29 | ## Examples
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| 30 |
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| 31 | ```js
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| 32 | math.isNumeric(2) // returns true
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| 33 | math.isNumeric('2') // returns false
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| 34 | math.hasNumericValue('2') // returns true
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| 35 | math.isNumeric(0) // returns true
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| 36 | math.isNumeric(math.bignumber(500)) // returns true
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| 37 | math.isNumeric(math.fraction(4)) // returns true
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| 38 | math.isNumeric(math.complex('2-4i') // returns false
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| 39 | math.isNumeric([2.3, 'foo', false]) // returns [true, false, true]
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| 40 | ```
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| 41 |
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| 42 |
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| 43 | ## See also
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| 44 |
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| 45 | [isZero](isZero.md),
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| 46 | [isPositive](isPositive.md),
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| 47 | [isNegative](isNegative.md),
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| 48 | [isInteger](isInteger.md),
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| 49 | [hasNumericValue](hasNumericValue.md)
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