# Tagged Questions

86 views

### Exponent Upon Exponent? [duplicate]

I can't understand this. Can you please make a clearer explanation?
255 views

### Express the following formula in terms of n

Express $$T(2^k)=\frac{k(k+1)}{2}.$$ In terms of $n$, where $n = 2^k$. I'm not sure how to go about with the conversion. Can someone concisely explain? Thank you.
983 views

### Intuition for iterated function for log log log n.

Intuitively, $\log n$ (base 2) is the number of times you have to divide $n$ by 2 before reaching a number around 2. (Waving our hands a little to gloss over floor vs ceiling and $\pm$ 1 errors.) ...
10k views

### How do you explain the concept of logarithm to a five year old?

Okay I understand that it cannot be explained to a 5 year old. But, how do you explain the logarithm to primary school students?
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### Plotting $\frac{1}{\ln x}$

I need assistance in plotting the graph of $\frac{1}{\ln x}$. wolframalpha gives this. How to plot this function (both real and imaginary part) using calculus?