有没有人懂什么是线性试差法
最近遇到一难题，方程如下：log(Q/t**b)=a+ct，其中a，b，c未知，t，Q值如下，查阅了一些资料，先是用线性迭代试差法求得<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-bidi-font-family: 'mso-ascii-font-family:'mso-hansi-font-family:'">相关系数较高时的<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-bidi-font-family: 'mso-ascii-font-family:'mso-hansi-font-family:'">最佳拟合的</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'mso-bidi-font-size:12.0pt;mso-fareast-font-family:宋体;mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;">b</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-bidi-font-family: 'mso-ascii-font-family:'mso-hansi-font-family:'">值，然后再根据最小二乘法求得a，c值，请问各位老师，什么是线性迭代试差法？<table cellspacing="0" cellpadding="0" border="0">
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<td valign="bottom" noWrap="noWrap" width="36">
<p align="center">t </p>
<p align="center">1
<p></p>
<p></p></td>
<td valign="bottom" noWrap="noWrap" width="60">
<p align="center"><font face="Times New="New" Roman">Q</font></p>
<p align="center"><font face="Times New="New" Roman">20.2
<p></p></font>
<p></p></td></tr>
<tr>
<td valign="bottom" noWrap="noWrap" width="36">
<p align="center">2
<p></p>
<p></p></td>
<td valign="bottom" noWrap="noWrap" width="60">
<p align="center"><font face="Times New="New" Roman">120.1
<p></p></font>
<p></p></td></tr>
<tr>
<td valign="bottom" noWrap="noWrap" width="36">
<p align="center">3
<p></p>
<p></p></td>
<td valign="bottom" noWrap="noWrap" width="60">
<p align="center"><font face="Times New="New" Roman">127.3
<p></p></font>
<p></p></td></tr>
<tr>
<td valign="bottom" noWrap="noWrap" width="36">
<p align="center">4
<p></p>
<p></p></td>
<td valign="bottom" noWrap="noWrap" width="60">
<p align="center"><font face="Times New="New" Roman">139.5
<p></p></font>
<p></p></td></tr>
<tr>
<td valign="bottom" noWrap="noWrap" width="36">
<p align="center">5
<p></p>
<p></p></td>
<td valign="bottom" noWrap="noWrap" width="60">
<p align="center"><font face="Times New="New" Roman">140.2
<p></p></font>
<p></p></td></tr>
<tr>
<td valign="bottom" noWrap="noWrap" width="36">
<p align="center">6
<p></p>
<p></p></td>
<td valign="bottom" noWrap="noWrap" width="60">
<p align="center"><font face="Times New="New" Roman">185.2
<p></p></font>
<p></p></td></tr>
<tr>
<td valign="bottom" noWrap="noWrap" width="36">
<p align="center">7
<p></p>
<p></p></td>
<td valign="bottom" noWrap="noWrap" width="60">
<p align="center"><font face="Times New="New" Roman">187.95
<p></p></font>
<p></p></td></tr>
<tr>
<td valign="bottom" noWrap="noWrap" width="36">
<p align="center">8
<p></p>
<p></p></td>
<td valign="bottom" noWrap="noWrap" width="60">
<p align="center"><font face="Times New="New" Roman">101.82
<p></p></font>
<p></p></td></tr>
<tr>
<td valign="bottom" noWrap="noWrap" width="36">
<p align="center">9
<p></p>
<p></p></td>
<td valign="bottom" noWrap="noWrap" width="60">
<p align="center"><font face="Times New="New" Roman">87.62
<p></p></font>
<p></p></td></tr>
<tr>
<td valign="bottom" noWrap="noWrap" width="36">
<p align="center">10
<p></p>
<p></p></td>
<td valign="bottom" noWrap="noWrap" width="60">
<p align="center"><font face="Times New="New" Roman">79.38</font>
<p></p>
<p></p></td></tr></tbody></table></span></span>
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