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Transformation In modulus
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KingRich
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#1
I have come across something similar to this question before.
Solve equation
x|x|=x²
So, first of all, cancel out x from both sides
I now have |x|=x
Therefore, -x= x and x=x
So,
-x=x ——> 0=2x , therefore x=0 and then x=x, well just cancels out.
Eh, what’s going on here lol
What’s to solve?
Solve equation
x|x|=x²
So, first of all, cancel out x from both sides
I now have |x|=x
Therefore, -x= x and x=x
So,
-x=x ——> 0=2x , therefore x=0 and then x=x, well just cancels out.
Eh, what’s going on here lol
What’s to solve?
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mqb2766
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#2
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#2
(Original post by KingRich)
I have come across something similar to this question before.
Solve equation
x|x|=x²
So, first of all, cancel out x from both sides
I now have |x|=x
Therefore, -x= x and x=x
So,
-x=x ——> 0=2x , therefore x=0 and then x=x, well just cancels out.
Eh, what’s going on here lol
What’s to solve?
I have come across something similar to this question before.
Solve equation
x|x|=x²
So, first of all, cancel out x from both sides
I now have |x|=x
Therefore, -x= x and x=x
So,
-x=x ——> 0=2x , therefore x=0 and then x=x, well just cancels out.
Eh, what’s going on here lol
What’s to solve?
x(|x| - x) = 0
So
x=0
and
x = |x|
so all x>=0 solve that equation as should be fairly obvious from the question.
Last edited by mqb2766; 1 month ago
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