Question

compute the Derivative

y=ln(lnx)

Answer 1

use chain rule

g(x) = ln(x) g'(x) = 1/x
s(x) = ln(x) s'(x) = 1/x
chain rule is simply:
g'(s(x))*s'(x)

so we have

1/(ln(x)) * 1/x

Answer 2

thus 1/xln(x)

Answer 3

is the derivative

Answer 4

thank you.