Description: . calculate 1^2+2^2+... +10^2 2. a two-year project with an initial investment of $2000 is expected to generate $800 in revenue at the end of first, generating a 1600 return on investment at the end of second. The internal rate of return for the project is IRR 3., someone loans 20000 yuan to buy a car, the annual interest rate is 6%, he needs 5 months in the monthly installment, ask him every month how much to pay
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irr.py
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作业.txt
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