一道题,麻烦详解过程,谢谢哈
(59+59+59+59+59+1250)*(1+R)^-5=1000方程的,就是有个-5次方计算不出来,要过程的,谢谢...
(59+59+59+59+59+1250)*(1+R)^-5=1000
方程的,就是有个-5次方计算不出来,要过程的,谢谢 展开
方程的,就是有个-5次方计算不出来,要过程的,谢谢 展开
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(59+59+59+59+59+1250)*(1+R)^-5=1000
(5*59+1250)*(1+r)^(-5)=1000
(1+r)^(-5)=1545
r = (309^(1/5)*%e^(2*%i*%pi/5)-200^(1/5))/200^(1/5)
r = (309^(1/5)*%e^(4*%i*%pi/5)-200^(1/5))/200^(1/5)
r = -%e^-(4*%i*%pi/5)*(200^(1/5)*%e^(4*%i*%pi/5)-309^(1/5))/200^(1/5)
r = -%e^-(2*%i*%pi/5)*(200^(1/5)*%e^(2*%i*%pi/5)-309^(1/5))/200^(1/5)
r[实数] = (309^(1/5)-200^(1/5))/200^(1/5)
答案看起来比较有点麻烦,希望尊重下我打字,谢谢
(5*59+1250)*(1+r)^(-5)=1000
(1+r)^(-5)=1545
r = (309^(1/5)*%e^(2*%i*%pi/5)-200^(1/5))/200^(1/5)
r = (309^(1/5)*%e^(4*%i*%pi/5)-200^(1/5))/200^(1/5)
r = -%e^-(4*%i*%pi/5)*(200^(1/5)*%e^(4*%i*%pi/5)-309^(1/5))/200^(1/5)
r = -%e^-(2*%i*%pi/5)*(200^(1/5)*%e^(2*%i*%pi/5)-309^(1/5))/200^(1/5)
r[实数] = (309^(1/5)-200^(1/5))/200^(1/5)
答案看起来比较有点麻烦,希望尊重下我打字,谢谢
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