add demo files

Hong-Phuc Bui

2024-09-27 45c96fe258657363ef4ad1a2ae93513ca4139e26

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n = 10
h = 1
algebraic_h = "1"
 
for k in range(2, n+2):
    print(f"{algebraic_h} = {h}")
    algebraic_h = f"{algebraic_h} + 1/{k}"
    h = h + 1/k