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【求助】請教此方程的MATLAB解法
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請教此方程的MATLAB解法 (1-a)^n=(b/x)*((x-c)/(b-c))^n 其中a,b,c,n都已知,求x 謝謝 |
» 搶金幣啦!回帖就可以得到:
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LZ下為解析解形式 >> syms a x;solve('(1-a)^8=(0.22/x)*((200-x)/199.98)^8','x') ans = RootOf(X23^8 - 1600*X23^7 + 1120000*X23^6 - 448000000*X23^5 + 112000000000*X23^4 - 17920000000000*X23^3 + 1792000000000000*X23^2 - 25600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000/10008003601200330079217163432643614339387154094354890995968377730466292582503452443909972786734210864358144806429271875246326625363187509269664014448354608273383783099384359449624789237464577166826995148849431153793851432643534321716079203300120003600080001*X23*(- 400/11*a + 1400/11*a^2 - 2800/11*a^3 + 3500/11*a^4 - 2800/11*a^5 + 1400/11*a^6 - 400/11*a^7 + 50/11*a^8 + 12610088039613203630871388797759079757733258695037903800955652155035129218407537976883009700654076319507939592870721990627709592878995062601966304158931900691007221614093227953945872681612110348835096946637343742691732365759078877538876871236301320039600880011/2750000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) + 2560000000000000000, X23) |

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