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10 cards from this deck
11−x2\frac{1}{\sqrt{1-x^2}}1−x21
−11−x2-\frac{1}{\sqrt{1-x^2}}−1−x21
11+x2\frac{1}{1+x^2}1+x21
−11+x2-\frac{1}{1+x^2}−1+x21
1∣x∣x2−1\frac{1}{|x|\sqrt{x^2-1}}∣x∣x2−11
−1∣x∣x2−1-\frac{1}{|x|\sqrt{x^2-1}}−∣x∣x2−11
∣x∣≤1|x| \leq 1∣x∣≤1
arcsinx\arcsin xarcsinx positive, arccosx\arccos xarccosx negative
x1+x4\frac{x}{1+x^4}1+x4x
arccosx−x1−x2\arccos x - \frac{x}{\sqrt{1-x^2}}arccosx−1−x2x
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