## E668 -- De integratione formulae $$\int \frac{\partial x \sqrt{1+x^4}}{1-x^4}$$ aliarumque eiusdem generis per logarithmos et arcus circulares

(On the integration of the formula $$\displaystyle \int \frac{\partial x \sqrt{1+x^4}}{1-x^4}$$ and of others of the same type by logarithms and circular arcs)

Summary:

Publication:
• Originally published in Institutiones calculi integralis 4, 1794, pp. 36-48
• Opera Omnia: Series 1, Volume 19, pp. 84 - 97
• Reprinted in Institutiones calculi integralis, ed. tertia, 4, 1845, pp. 36-48 [E668a]
Documents Available:
• Original Publication: E668