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Isaac
  • Member for 10 years, 8 months
  • Last seen more than 10 years ago
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193
Is it true that $0.999999999\ldots=1$?
182
Why $\sqrt{-1 \cdot {-1}} \neq \sqrt{-1}^2$?
177
How to prove Euler's formula: $e^{it}=\cos t +i\sin t$?
148
Is there a general formula for solving Quartic (Degree $4$) equations?
113
Convert HTML entities to Unicode and vice versa