东华大学matlab数学实验-第四次答案(7)

first =

405000

>> x=all*7/10

x =

945000

>> r=504/12/10000

r =

0.0042

>> n=20*12

n =

240

>> a=((1+r)^n*r*x)/((1+r)^n-1)

a =

6.2575e+03

>> x=x-100000

x =

845000

>> a=((1+r)^n*r*x)/((1+r)^n-1)

a =

5.5953e+03

>> r=405/10000/12

r =