If f is holomorphic | f(n) (0)| n! |an| = on D(0, 1) and [ƒ(2)| < 1, show that ≤ (n + 1) [ 1 + (₁ ²) " ≤ e(n+1). Use a Cauchy estimate with integration on C(0,r) and choose r = n n+1•

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