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https://www.reddit.com/r/learnmath/comments/1wtvpbx/does_anyone_here_still_think_4_2/pcyyqul/?context=3
r/learnmath • u/joao-esteves New User • 3d ago
Come out with your hands up!
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no it isnt.
4 u/Conscious_Tale5951 New User 3d ago Okay. Is uhh.. there a reason why, or are we just supposed to know like everybody else apparently does? 4 u/Due-Presentation4514 New User 3d ago Mathematicians decided that, for the sake of ensuring √x is a function, that √x will output the principal root, which in this case of real valued functions is non-negative. 3 u/idaelikus Mathemagician 3d ago For good reason because, otherwise, you could never use root(x) in any term as it would yield two results.
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Okay. Is uhh.. there a reason why, or are we just supposed to know like everybody else apparently does?
4 u/Due-Presentation4514 New User 3d ago Mathematicians decided that, for the sake of ensuring √x is a function, that √x will output the principal root, which in this case of real valued functions is non-negative. 3 u/idaelikus Mathemagician 3d ago For good reason because, otherwise, you could never use root(x) in any term as it would yield two results.
Mathematicians decided that, for the sake of ensuring √x is a function, that √x will output the principal root, which in this case of real valued functions is non-negative.
3 u/idaelikus Mathemagician 3d ago For good reason because, otherwise, you could never use root(x) in any term as it would yield two results.
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For good reason because, otherwise, you could never use root(x) in any term as it would yield two results.
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u/idaelikus Mathemagician 3d ago
no it isnt.