題目是
A company pays 100 for a bond with annual coupons X to get an effective rate of
5%. The amount of interest in the 5th coupon is 4.85. Determine X.
解答是 5.70.
後面解答其實我看得懂.. 方法是 B4 = 100 * (1+5%)^4 - X * S(4)

加油推!禮拜一就考了幫集氣

5.7代入進去算 沒有錯阿

最後一式求解不就出來了嗎

天阿 我竟然笨了一個下午.. 我知道式子沒列錯了 謝謝 :)驚險拿到congratulations...