有一條數學 問題 謝謝回答...

2007-01-05 10:28 am
2a. Jacky deposits $7000 in a bank on 1^st Jan 2006. The investment is compounded monthly at a rate of 1% per month. Calculate the interest earned on 31^st Dec 2006. (2decimal places)

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回答 (2)

2007-01-05 10:43 am
✔ 最佳答案
ANS:

7000 * ( 1 + 1 / 100 ) ^ 12 - 7000

= $887.7

^ 代表 power
1 / 100 << 係因為 % ,而家一個月係1%比年你要除十二
(1+x%)^times << 係用黎求 複合利息用的方法,而家係收十二次息,所以要乘十二。
成條數計完你會搵倒一年後你既本利和,但你而家袛係要利息,所以要減番7000
2007-01-05 10:34 am
7000*(1+1%)^12
=7887.78
7887.78-7000
INTEREST=887.78


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