What is the derivative of tan^-1 x?

3 ⤊

2006-12-02 09:48:49 · 4 answers · asked by ndavos 2 in Science & Mathematics ➔ Mathematics

1/(1+x^2)

2006-12-02 10:02:13 · answer #1 · answered by Josh H 2 · 1⤊ 0⤋

d/dx arctan x (inverse tan x)
1/(1+x^2)

2006-12-02 09:50:59 · answer #2 · answered by neo1072 2 · 1⤊ 0⤋

(tan^-1(x))' = 1/(1 + x^2)

Info found at
www-math.mit.edu/~djk/18_01/chapter20/proof02.html

2006-12-02 12:21:30 · answer #3 · answered by Sherman81 6 · 0⤊ 0⤋

one over one plus x squared

2006-12-02 09:51:25 · answer #4 · answered by Anonymous · 1⤊ 0⤋