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4 ∑ k^2 - how to read this please? thanks k=1

Mathematics
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it is read as summation k=1 to 4 k^2
This is a summation notation. I usually read it as the following: ``` The sum of all integer “k”s from 1 to 4 in the function k^2. ```
that's just a shortcut way of writing 1^2 + 2^2 + 3^3 + 4^2

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oops ,, i mean 3^2...
Or as @dpaInc said, you can just say it like this: ``` 1^2 + 2^2 ... till ... 4^2 ```
thanks. and what is the easiest way to type math terms like this in word, or in a web page please, thanks

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