patulong po Hyperbolic and Inverse Hyperbolic functions problems (Integral Calculus)

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Number 1
$\displaystyle \int y^2 \, {\rm csch} \, y^3 \, dy$

      $\displaystyle = \frac{1}{3} \int {\rm csch} \, y^3 (3y^2\, dy)$

      $\displaystyle = -\frac{1}{3} {\rm coth} \, y^3 + C$