\sum n ^ { 2 } = 2
Solve for Σ
Σ=\frac{2}{n^{2}}
n\neq 0
Solve for n (complex solution)
n=-\sqrt{2}Σ^{-\frac{1}{2}}
n=\sqrt{2}Σ^{-\frac{1}{2}}\text{, }Σ\neq 0
Solve for n
n=\sqrt{\frac{2}{Σ}}
n=-\sqrt{\frac{2}{Σ}}\text{, }Σ>0
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n^{2}Σ=2
The equation is in standard form.
\frac{n^{2}Σ}{n^{2}}=\frac{2}{n^{2}}
Divide both sides by n^{2}.
Σ=\frac{2}{n^{2}}
Dividing by n^{2} undoes the multiplication by n^{2}.
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