Mathc initiation/a0083
Calculons la dérivée :
y = asec(x) *
sec(y) = sec(asec(x))
sec(y) = x *
(sec(y))' = (x)'
sec(y) tan(y) dy/dx = 1
dy/dx = 1/(sec(y) tan(y))
* sec(y) = x
* y = asec(x)
d(asec(x))/dx = 1/(x tan(asec(x)))
*** tan(asec(x)) = sqrt(x**2-1) ***
(asec(x))' = 1/(x sqrt(x**2-1))
*** tan(asec(x)) = sqrt(x**2-1) ***