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10 questions from this quiz
ln(x+x2+1)\ln(x + \sqrt{x^2 + 1})ln(x+x2+1)
x≥1x \geq 1x≥1
11−x2\frac{1}{\sqrt{1 - x^2}}1−x21
−11−x2-\frac{1}{\sqrt{1 - x^2}}−1−x21
∣x∣<1|x| < 1∣x∣<1
11+x2\frac{1}{\sqrt{1 + x^2}}1+x21
12ln(1+x1−x)\frac{1}{2} \ln\left(\frac{1+x}{1-x}\right)21ln(1−x1+x)
11+x2\frac{1}{1 + x^2}1+x21
x2−1\sqrt{x^2 - 1}x2−1
1+tan2x=sec2x1 + \tan^2 x = \sec^2 x1+tan2x=sec2x
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