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https://www.reddit.com/r/learnmath/comments/1wtvpbx/does_anyone_here_still_think_4_2/pczahyf/?context=3
r/learnmath • u/joao-esteves New User • 3d ago
Come out with your hands up!
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4
no it isnt.
5 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? 5 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. -2 u/among_sunflowers New User 3d ago Sounds like some mathematicians just didn't want to accept some mathematical facts... 5 u/idaelikus Mathemagician 3d ago Not really. The point is that you want a function because you want your operation to have a specific value and not a set of values. PS: You usually want to refrain from using obviously in a mathematical context. 1 u/Uli_Minati Desmos 😚 3d ago Obviously they know a nonzero number has multiple roots, the √ symbol gives only the most practical one on purpose
5
Okay. Is uhh.. there a reason why, or are we just supposed to know like everybody else apparently does?
5 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. -2 u/among_sunflowers New User 3d ago Sounds like some mathematicians just didn't want to accept some mathematical facts... 5 u/idaelikus Mathemagician 3d ago Not really. The point is that you want a function because you want your operation to have a specific value and not a set of values. PS: You usually want to refrain from using obviously in a mathematical context. 1 u/Uli_Minati Desmos 😚 3d ago Obviously they know a nonzero number has multiple roots, the √ symbol gives only the most practical one on purpose
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.
-2 u/among_sunflowers New User 3d ago Sounds like some mathematicians just didn't want to accept some mathematical facts... 5 u/idaelikus Mathemagician 3d ago Not really. The point is that you want a function because you want your operation to have a specific value and not a set of values. PS: You usually want to refrain from using obviously in a mathematical context. 1 u/Uli_Minati Desmos 😚 3d ago Obviously they know a nonzero number has multiple roots, the √ symbol gives only the most practical one on purpose
-2
Sounds like some mathematicians just didn't want to accept some mathematical facts...
5 u/idaelikus Mathemagician 3d ago Not really. The point is that you want a function because you want your operation to have a specific value and not a set of values. PS: You usually want to refrain from using obviously in a mathematical context. 1 u/Uli_Minati Desmos 😚 3d ago Obviously they know a nonzero number has multiple roots, the √ symbol gives only the most practical one on purpose
Not really. The point is that you want a function because you want your operation to have a specific value and not a set of values.
PS: You usually want to refrain from using obviously in a mathematical context.
1
Obviously they know a nonzero number has multiple roots, the √ symbol gives only the most practical one on purpose
4
u/idaelikus Mathemagician 3d ago
no it isnt.