有限級數

[z4853348z (...)]

let y=f(f(x))
該怎麼下手…
http://i.imgur.com/kSOLrHr.jpg

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→ thinkabout  : sum(10^2n), n=0~5?
→ z4853348z   : 我也不知道，題目寫x=0~0.01
→ yhliu       : f(x)水= 1+x+...+x^5, f'(x) = 1+2x+...+5x^4
→ yhliu       : y = f(f(x)), dy = f'(f(x))f'(x) dx
→ yhliu       : x = 0, dx = 0.01, f(0) = 1, f'(0)=1, f'(1)=15,
→ yhliu       : dy = (15)(1)(0.01) = 0.15.