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Python - math.sqrt() method example
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math.sqrt is a method that returns a number which is the square root of input value. The method works only on positive real numbers.
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import math2
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print( math.sqrt( 4 ) ) # 24
print( math.sqrt( 9 ) ) # 35
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print( math.sqrt( 2 ) ) # 1.41421356237309517
print( math.sqrt( 0.5 ) ) # 0.70710678118654768
print( math.sqrt( 0 ) ) # 09
print( math.sqrt( -1 ) ) # ValueError| Syntax |
xxxxxxxxxx1 math.sqrt(x) |
| Parameters | x - number to find the square of. Value in the range 0 to infinity. |
| Result |
Square root If the operation can not be executed |
| Description | sqrt is a method that returns a number which is square root of input value. The method works only on positive real numbers. |
In this example, the way how to calculate square root using power function is presented.
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import math2
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def calculate_sqrt(value):5
return math.pow(value, 0.5)6
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#Examples:9
print( calculate_sqrt( 4 ) ) # 210
print( calculate_sqrt( 9 ) ) # 311
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print( calculate_sqrt( 2 ) ) # 1.414213562373095113
print( calculate_sqrt( 0.5 ) ) # 0.707106781186547614
print( calculate_sqrt( 0 ) ) # 015
print( calculate_sqrt( -1 ) ) # ValueError