How To Do Square Root May 12 2015 nbsp 0183 32 Since it s continuous the square root of any positive real number is always a well defined positive real number Given the positive gap between rationals which you want to take the square root of the square root is the positive gap between rationals such that any rational greater than the square root gap squares to a rational greater than the
Gerolamo Cardano 1501 1576 Ars Magna on the cubic equations quot Cube the third part of the number of things to which you add the square of half the number of the equation and take the root of the whole that is the square root which you will use in the one case adding the half of the number which you just multiplied by itself in Apr 25 2013 nbsp 0183 32 Stack Exchange Network Stack Exchange network consists of 183 Q amp A communities including Stack Overflow the largest most trusted online community for developers to learn share their knowledge and build their careers
How To Do Square Root
How To Do Square Root
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How To Do Square Root Equations
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How To Do Square Root Equations
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Oct 14 2015 nbsp 0183 32 The symbol refers to one of the square roots The fact that we call it quot the quot square root quot instead of quot the positive square root when one exists quot is inaccurate laziness but coloquially understood begingroup Minor point I notice quite a few elementary algebra books as well as some writers here taking the view that the n th root of x is defined as x to the power 1 n I disagree strongly I disagree strongly
For example sqrt 4 I ve asked a bunch of people and I get mixed answers all the time as to whether it is 2 and 2 or just 2 How about if there s a negative in front of the square r You could say quot the square roots of 49 are pm 7 quot and that would be fine but otherwise saying quot the square root of 49 quot usually refers to what we write as sqrt 49 The sqrt symbol always refers to the positive root by default so although sqrt 49 7 which is positive is the square root of 49 sqrt 49 7 is another
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For example you want to find square root of 36 You find the divisors They are 2x2x3x3 In step 2 they appeared as 2x3 That is 6 Problem is this method works when the square root is an integer number It doesn t work for numbers that doesn t have integer square root Like 38 The square root function like all bona fide functions is single valued rather than multi valued so if we were tasked with creating our own square root function from scratch we would have to make a choice between the two square roots of every positive number as the value the function takes if we want to further impose continuity and
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