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**1. Homework Statement**

∫(t/√(1-t

^{4}))dt

**2. Homework Equations**

∫(du/√(a

^{2}- u

^{2})) = arcsin (u/a) + C

∫(du/(a

^{2}+ u

^{2}) = (1/a) arctan (u/a)

∫(du/(u√(u

^{2}- a

^{2}))) = (1/a) arcsec (|u|/a)

**3. The Attempt at a Solution**

Edit: I meant to write u where t

Edit: I meant to write u where t

^{2}is
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