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Can we use the ‘maps to’ symbol to show a solution of an equation?

Mathematics
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For example,\[\rm 3x = 18 \implies x\mapsto6\]Will that be the correct notation?
Also check this one:\[\rm x^2 = 9\implies x\mapsto(3,-3)\]
\[f:x \rightarrow3x\] is that cornened with functions

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Other answers:

The first is OK because it defines x as a constant function.
The second defines x as a constant function yielding (3,-3) which doesn't make much sense here... perhaps you mean: \[x=\pm3\text{ or }x\in\{3,-3\}\]
x is mapped to 3x -18
What does “mapped to” exactly mean?
we willneed to variables to talk about mapping
we will need two variables
mapped is in relation to functions.
Yes, okay, but how can you say that \(\rm x\) maps to 3 or -3?
@ParthKohli a map is a relation between sets; \[x\mapsto3\text{ is essentially the same as }F(x)=3\]
|dw:1350632977047:dw| f is a function that maps x to y
Yes, that's exactly what I am taught. Was just confirming. :)
Where y = f(x)....
Well, so how can say write this? x maps to either 3 or -3.
Yes, yes, I know that. :P
\[y^2-9=x\]
So where is your function?
\[x : \mathbb{R}\to{-3,3} \]
Here:\[\rm x^2 - 9 = 0\]
\[x\in\{-3,3\}\text{ or }x=\pm3\]
As I said, I need to use the mapping symbol for showing the solution of an equation.
My current question is, how can we use the mapping symbol to show two solutions of an equation?
That makes virtually no sense. Do you know what the symbol means?
That is not usual...
Yes, I know what mapping means... ugh. Can we even use the mapping symbol to show two solutions of an equation?
Not really...
\[x:y \rightarrow \pm \sqrt{9}\]
If you knew what a map was you wouldn't ask a question like that; no, you can't because that's not what it's for. That's like asking "can I use a telescope to write?"
How would you represent that the solutions of equation \(\rm x^2 = 9\) are \(3\) and \(-3\)?
\[x=\pm3\text{ or }x\in\{-3,3\}\]
Well, one way is just to write it like u just did...:-)
What will the full mathematical sentence be? @estudier @oldrin.bataku
x^2 = 9 -> x = plus/minus 3
\[\rm x^2 = 9 \implies x=\pm 3\]right?
That's the same, yes...
Thank you both, I'm returning with another question. :P
\[(x^2=9)\implies(x=\pm3)\]
use \mapsto to show the related sets , the independent variable (x) and the dependent variable f

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