個 Proof 睇到 R 爆頭

原來係 Typo

The erratum should be made like this:

ln (1 + 1/k) = ln (k+1/k) = ln (k+1) - ln(k)

Then take summation sign and use the sum of differences.

另外, 好多人望到 Auxiliary Functions 都會 R 爆頭

好明顯最後面嗰舊野係 error terms

用番 Taylor Theorem 同 first derivative 嘅定義去睇就好易明, 仲有:

Δy =mΔx

y = mx + c

Pure Math 之所以難就係因為有太多小技倆要記

攞 A 嗰堆人就係 CE 時期已經溫定

小學數學神童識計 Complex Variables,

全部都係有人幫佢哋谷定大學數

奧數堆選手亦如是觀

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