CalculationDenote A=PMT-P r
First year principal reduction: A
Second year reduction: A(1+r)
You just abke to fill two pail of water.
Third year: A(1+r)^2
...
30th year: A(1+r)^29
P=A[1+(1+r)+(1+r)^2+...+(1+r)^29]=A[(1+r)^30-1]/r
A=P r/[(1+r)^30-1]
PMT=A+P r
Stay away from mathematics please.
不需要这么复杂啊
下面对PMT的解释够简单明了吧，但是为什么这么算？
800k*(1+r)^30=Ng + Ng(1+r) + Ng(1+r)^2 + ... + Ng(1+r)^29
Ng=43.497K
800k*(1+r)^30=Ng + Ng(1+r) + Ng(1+r)^2 + ... + Ng(1+r)^29
Ng=43.497K
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