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Isaac's user avatar
Isaac's user avatar
Isaac
  • Member for 14 years, 8 months
  • Last seen more than 10 years ago
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195
Is it true that $0.999999999\ldots=1$?
183
Why $\sqrt{-1 \cdot {-1}} \neq \sqrt{-1}^2$?
178
How to prove Euler's formula: $e^{it}=\cos t +i\sin t$?
149
General formula for solving quartic (degree $4$) equations
114
Convert HTML entities to Unicode and vice versa