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[求助]
超越函數(shù)求解析式 已有1人參與
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求大神幫忙解答這個超越函數(shù)a(x.^2)+bx-c(1+x)log(1+x)+d=0 a,b,c,d為參數(shù),想得到x關于a,b,c,d的表達式。用matlab無法解出,如果只能近似解的話,采用什么方法,怎么解 |
榮譽版主 (文壇精英)
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專家經(jīng)驗: +518 |
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(1+x)log(1+x) 為乘對數(shù)函數(shù),在木蟲論壇搜一下,老問題了。可借助wiki百科w函數(shù)做級數(shù)展開,求近似解。 發(fā)自小木蟲Android客戶端 |
鐵桿木蟲 (職業(yè)作家)
銀蟲 (小有名氣)
銀蟲 (小有名氣)
榮譽版主 (文壇精英)
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專家經(jīng)驗: +518 |
榮譽版主 (文壇精英)
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專家經(jīng)驗: +518 |
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Try the following: Use different phrasing or notations Enter whole words instead of abbreviations Avoid mixing mathematical and other notations Check your spelling Give your input in English Other tips for using Wolfram|Alpha: Wolfram|Alpha answers specific questions rather than explaining general topics Enter "2 cups of sugar", not "nutrition information" You can only get answers about objective facts Try "highest mountain", not "most beautiful painting" Only what is known is known to Wolfram|Alpha Ask "how many men in Mauritania", not "how many monsters in Loch Ness" Only public information is available Request "GDP of France", not "home phone of Michael Jordan" 我試了一下,解不出來,就是上面的那個。您輸進去之后能解出來嗎?表達式是多少呢? |
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