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10 cards from this deck
sinhx=ex−e−x2\sinh x = \frac{e^x - e^{-x}}{2}sinhx=2ex−e−x
coshx=ex+e−x2\cosh x = \frac{e^x + e^{-x}}{2}coshx=2ex+e−x
tanhx=sinhxcoshx\tanh x = \frac{\sinh x}{\cosh x}tanhx=coshxsinhx
cosh2x−sinh2x≡1\cosh^2 x - \sinh^2 x \equiv 1cosh2x−sinh2x≡1
(0,1)(0, 1)(0,1)
000
ln(x+x2+1)\ln(x + \sqrt{x^2 + 1})ln(x+x2+1)
ln(x+x2−1)\ln(x + \sqrt{x^2 - 1})ln(x+x2−1), x≥1x \geq 1x≥1
−1<y<1-1 < y < 1−1<y<1
Even function: cosh(−x)=coshx\cosh(-x) = \cosh xcosh(−x)=coshx
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