The derivative of arcsec(x)\operatorname{arcsec}(x)arcsec(x) is:
1/(∣x∣x2−1)1 / (|x|\sqrt{x^2-1})1/(∣x∣x2−1)
1/1−x21 / \sqrt{1-x^2}1/1−x2
1/(1+x2)1 / (1+x^2)1/(1+x2)
None