(1)净现值法与内部收益率法 ■净现值法: Q=∑ B (+r)台(1+r ≥0i=1,…,t;j=1 ■内部收益率法: B 0→r (+r)台(+ry 2021/2/202021/2/20 6 (1)净现值法与内部收益率法 净现值法: 内部收益率法: ( ) ( ) 0(i 1, ,t; j 1, ,n) 1 r C 1 r B Q i i 1 n j 1 j n i i = = + − + = = = ( ) ( ) r s 0 r 1 r C 1 r B i i 1 n j 1 j n i i + = + = = * *