问题如下图：
选项：
A. 
B. 
C. 
解释：
请问 为什么不是输入IRR呢
A $2.2 million investment will result in the cash flows shown below: Using 8% opportunity cost of capital, the project’s net present value (NPV) is closest to: $2.47 million. $3.40 million. $4.67 million A is correThe NPV=−2.2+1.31.08+1.61.082+1.91.083+0.81.084=2.47The\text{ }NPV=-2.2+\frac{1.3}{1.08}+\frac{1.6}{1.08^2}+\frac{1.9}{1.08^3}+\frac{0.8}{1.08^4}=2.47The NPV=−2.2+1.081.3+1.0821.6+1.0831.9+1.0840.8=2.47 ceshiceshi ceshi测试
为什么我算出来的答案是3.4？
请问这道题计算器怎么按？
求具体计算器按法，我输入CF0=2.2 CF1=1.3 CF2=1.6 CF3=1.9 CF4=0.8 I=8 但算不出结果
