·Ŀչ̽

·Ŀշķ
ͶĿзշķܶ࣬Ϲ·Ŀص㣬ص۸ʷʷַڸʷоһ
1ʷ
ʷǼٶͶĿֵĸʷֲΪ̬Ļϣֲ̬ͨͼ㾻 ֵСĸжĿճ̶ȵľ߷
ӦøʷзշһĿֵĸʷֲΪ̬ÿֽ һֽûӰһֽա
·ͶĿ˿øʷзշһϸַ
һշѹ·ĿΪ꣬ÿͶ4ԪͶ8ԪĿɺ20ÿշѶֽȡڵ꽻ͨĴСֿԣ
1ֵļ㪥
øʷʱΪ÷ղӳֵϣǷӳĿֽ׼ϣ ҲǷӳھֲֵ̬ͼϣֵʾӦ޷ʡ ʽ
nENPV=ơEYt/1+it t=10
ʽУENPV-ֵEYt-ֽʽ1㣻i-޷ʣt-ʱС
޷iȡ10%.㣬ֵENPV=4713Ԫ2ֽ׼Ŀֽ׼Ŀڸֽ׼޷ֵֵƽ͵ƽ
ʽУ-ֽ׼t-ֽ׼ʽ2㣻i-޷ʣt-ʱС
㣬ֽ׼=4160Ԫ
3ֵСĸʵļ㪥
ڼٶֵΪֲ̬ĻϣԸֵĿʽ׼ֵСֲ̬ͼֵСĸʡͶ߾Ϳ԰ԼԷյ̶̳ȣһʾĿȡᡣ
Ȱʽֲ̬Kֵֵ൱Ŀֽ׼ĸ
KENPV/ҡ
K=4713/4160=1.13
ȻKֲֵ̬вֲ̬ͼ߼DzֵֵСĸPb.ֲ̬вPb=0.1292.ĿҪĿͶǷԸΪȡ4713ԪľֵðֵС Ϊ1292%ķա
2ʷ
ڶĿвʱͨDzгڴΪʣдʲ׼ȷʵطӳʽʱֵͶʷҪ󳬹ʽʱֵIJ֣дʵDzʵġյʷǽĿеնҪġͶĿķճ̶ӦķձʽɱҪﵽʣɰյʣԽͶʾ߷ķ÷Ĺؼȷʣʽ
K=i+b.Cv
ʽУK-ʣ
i-޷ʣ
b-ձбʣ
Cv-ϵʽ3㡣
޷iǼͨغʽʱֵͶʻһȡծȯΪ޷ʣǿԼԽ򻯵ذгڴΪ޷ʡ
ձбbԲеȷճ̶ȵͬĿʷϣڹ·Ŀ۹ʽ㣺
b=K-i/Cv
ʽзͬʽ7KiCvֵΪͬеȷĿIJյһȷͿĿľֵڲʵȾ۲ֵ㲻׸ַ򵥡ȱǰѷձʱֵһ𣬷ʱ ӶΪ빫·Ŀʵг룬ַ Ϊ·ĿͶʵһֲο
ġ瘟
ĶԹ·ĿķչһԵ۷Էչͷշ˼㷽 .·ĿķչҹͲƣ軨Ѵȥо еһЩȡֵӦϸоļ㷽Ҳдʵнһ .