Alraxite

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13 Questions

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14	What is $i$ exponentiated to itself $i$ times?
5	Prove $(A \triangle B) \cap (B\triangle C) \cap (C\triangle A) = \emptyset$
5	If $a+b=x$ and $ab=y$, what is the quickest way to solve for $a$ and $b$?
5	How did Euler solve the 4-whole-numbers-adding-up-to-a-perfect-square problem?
3	If A $\propto$ B and A $\propto$ C while keeping each other constant, then why is A $\propto$ BC? [duplicate]

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419 Reputation

+2	Order of operations (BODMAS)
+65	Find the Sum $1\cdot2+2\cdot3+\cdots + (n-1)\cdot n$
+25	Prove $(A \triangle B) \cap (B\triangle C) \cap (C\triangle A) = \emptyset$
+5	If $a+b=x$ and $ab=y$, what is the quickest way to solve for $a$ and $b$?

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4 Answers

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5	Find the Sum $1\cdot2+2\cdot3+\cdots + (n-1)\cdot n$
1	Prove that $A \mathop \triangle C \subseteq (A \mathop \triangle B)\cup (B \mathop \triangle C)$
0	Find $\sin(\theta/2)$, given that $\sin \theta = -4/5$ and $\theta$ terminates in $180^\circ<\theta<270^\circ$
0	Why is $y = \sqrt{x-4}$ a function? and $y = \sqrt{4 - x^2}$ should be a circle

22 Tags

5 binomial-coefficients	0 problem-solving × 2
5 summation	0 recreational-mathematics × 2
1 proof-writing × 2	0 tetration
1 elementary-set-theory × 2	0 approximation
0 trigonometry × 2	0 puzzle

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