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Physicsnut
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Homework Statement
Differentiate $$ln(lnx)$$
Homework Equations
The Attempt at a Solution
My solution:
Let $f(x)=lnx$, since${d/dx}ln f(x)={f'(x)/f(x)}$,
${d/dx}ln(lnx)={{1/x}/lnx}/times {1/x}
={1/x^2lnx}$.