How to Differentiate ln(ln x)?

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What is the derivative of ln(ln x)? This is a composite function. Supposed that we have ln x, but for now we have ln(ln x) instead. Therefore, solve this using Chain Rule Differentiation. First, differentiate the whole function. Then, multiply it by the derivative of the inner function.
Chain Rule of Logarithmic Derivative:
d/dx (ln f(x)) = (1 / f(x) ) * f'(x)

CHAIN RULE EXPLANATION VIDEO:

0:00 Introduction
0:19 Composite Function
0:57 Using Chain Rule
1:30 We did it!

#differentiation #chainrule #logarithm
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In my country, calculus is taught at university, but I learned calculus (derivatives, integrals, limits) by myself in the 9th grade. Now I'm 10. And I could solve this problem without looking at the explanation 😄

Kenseyder
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My mind immediately jumped to applying the chain rule, but I thought it was a trick question and that the chain rule wasn't complete or something

artemis_furrson
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Math ain't boring.. math is fun❤❤

Calcungruity