# Function isPositive Test whether a value is positive: larger than zero. The function supports types `number`, `BigNumber`, `Fraction`, and `Unit`. The function is evaluated element-wise in case of Array or Matrix input. ## Syntax ```js math.isPositive(x) ``` ### Parameters Parameter | Type | Description --------- | ---- | ----------- `x` | number | BigNumber | Fraction | Unit | Array | Matrix | Value to be tested ### Returns Type | Description ---- | ----------- boolean | Returns true when `x` is larger than zero. Throws an error in case of an unknown data type. ## Examples ```js math.isPositive(3) // returns true math.isPositive(-2) // returns false math.isPositive(0) // returns false math.isPositive(-0) // returns false math.isPositive(0.5) // returns true math.isPositive(math.bignumber(2)) // returns true math.isPositive(math.fraction(-2, 5)) // returns false math.isPositive(math.fraction(1,3)) // returns false math.isPositive('2') // returns true math.isPositive([2, 0, -3]) // returns [true, false, false] ``` ## See also [isNumeric](isNumeric.md), [isZero](isZero.md), [isNegative](isNegative.md), [isInteger](isInteger.md)