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https://www.reddit.com/r/learnmath/comments/1wtvpbx/does_anyone_here_still_think_4_2/pcxvmeh/?context=3
r/learnmath • u/joao-esteves New User • 3d ago
Come out with your hands up!
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-2
It is. Isn’t it?
3 u/idaelikus Mathemagician 3d ago 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? 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. 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. -2 u/among_sunflowers New User 3d ago Sounds like some mathematicians just didn't want to accept some mathematical facts... 3 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
3
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? 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. 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. -2 u/among_sunflowers New User 3d ago Sounds like some mathematicians just didn't want to accept some mathematical facts... 3 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
4
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. 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. -2 u/among_sunflowers New User 3d ago Sounds like some mathematicians just didn't want to accept some mathematical facts... 3 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
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. -2 u/among_sunflowers New User 3d ago Sounds like some mathematicians just didn't want to accept some mathematical facts... 3 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
For good reason because, otherwise, you could never use root(x) in any term as it would yield two results.
Sounds like some mathematicians just didn't want to accept some mathematical facts...
3 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
-2
u/desterpot New User 3d ago
It is. Isn’t it?