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The answer is C.
Earlier in this thread "cpl123" did some maths and showed that B has IRR values of 0% and 100% and so has multiple(2) real values.
For the solution for A, he left the formulation as a quadratic equation which has 2 roots but both roots are imaginary so no real roots. |
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发表于 2011-7-11 15:13
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