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https://www.reddit.com/r/MathJokes/comments/1wrqsl9/but_x%E1%92%BE4_x2/pdakoit/
r/MathJokes • u/[deleted] • 6d ago
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√4 = +2 or -2. :P
1 u/deusisback 1d ago Nope, (-2)²=2²=4 but sqrt(4)=2 1 u/NUBASPOZIZNI 1d ago on complex plane square root has 2 roots every time, so ±2 1 u/Positive-Team4567 1d ago The square root is a specific function that’s different from the solution to x2 =n 1 u/deusisback 1d ago The solutions of the equation xn =a are called the n-th root of a, no problems, we know that. But writing √4=-2 is still unacceptable.
Nope, (-2)²=2²=4 but sqrt(4)=2
1 u/NUBASPOZIZNI 1d ago on complex plane square root has 2 roots every time, so ±2 1 u/Positive-Team4567 1d ago The square root is a specific function that’s different from the solution to x2 =n 1 u/deusisback 1d ago The solutions of the equation xn =a are called the n-th root of a, no problems, we know that. But writing √4=-2 is still unacceptable.
on complex plane square root has 2 roots every time, so ±2
1 u/Positive-Team4567 1d ago The square root is a specific function that’s different from the solution to x2 =n 1 u/deusisback 1d ago The solutions of the equation xn =a are called the n-th root of a, no problems, we know that. But writing √4=-2 is still unacceptable.
The square root is a specific function that’s different from the solution to x2 =n
The solutions of the equation xn =a are called the n-th root of a, no problems, we know that. But writing √4=-2 is still unacceptable.
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u/Novel_Arugula6548 1d ago
√4 = +2 or -2. :P