Often used in capital budgeting, IRR is the interest rate that makes net present value of all cash flow equal zero.

IRR经常用于资本预算，它是使得所有现金流动的净现值为零的利率。

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To accommodate cash flow fluctuations, you can adjust the ROI calculation to include the net Present Value (NPV) of the net benefits divided by the NPV of the implementation costs.

要包含现金流的波动，可以调整roi计算，以包括净利益的净现值(Net Present Value, NPV)除以实现成本的NPV所得的值。

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The net present value (NPV) of a sequence of cash flows depends on the interest rate (r) used.

序列现金流的净现值(NPV)依赖于使用的利率(r)。

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Mathematically, the present value of EVA always is exactly the same as the net present value of cash flow.

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In this way one can either roll over to a new position as a matter of course, or get the cash value net of commissions before determining the best use of the proceeds.

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The value of an operating asset are the net present value of expected free cash flows discounted to infinity.

ECONOMIST: Robert Wade replies