1. find the cofficient of unequality of lorenz curve the eq. as
5
11 x
f(x) = --------------------- the limit of an error less than 0.005
2
10 + x
2. x dt -1
if f(x) = ∫ -------- find (f )'(0)
2 √(1+t^4)
-1
2. 我只找出了 f'(x) = (1+x^4)^(----)
2
f'(0) = 1
-1 1
(f )'(x) = --------
-1
f'(f )
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