<>我是一名山东某大学的研究生,根据老板(导师)的要求,要解决如下的问题。等我看到问题之后,才发觉问题真的有些难度,希望诸位大虾能够帮我度过难关,<FONT color=#ff0033>我可以通过给手机充值卡的方式支付一定的酬金作为感谢!至少<FONT face="Times New Roman">50</FONT>元,具体的金额有意者与我联系</FONT>。当然我也只是一个学生,不可能拿出太多的钱来,希望各位大哥大姐(<FONT face="Times New Roman">DDMM</FONT>也可以)帮帮我!谢谢!</P>
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<P>我的<FONT face="Times New Roman">QQ</FONT>:<FONT face="Times New Roman">149439183</FONT>,和我联系好了。(春节期间我明天要回家,初五以后回学校就可以和我联系了)
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<P>这个问题不需要给出程序,只要给出数学思想,最后我自己编程好了</P>
<P>只要解决到我老板那里能通过就可以了,我一定按照约定完成我的义务。</P>
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<P>问题如下:</P>
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<P><FONT face="Times New Roman">C</FONT>是关于温度<FONT face="Times New Roman">T</FONT>的函数,在他的表达式中,有四个尚未确定的参量。现在已知一组<FONT face="Times New Roman">T</FONT>和<FONT face="Times New Roman">C</FONT>的实验值,和四个参量的取值范围,要你作出(拟合)<FONT face="Times New Roman">4</FONT>个参量的最适值,使得带入<FONT face="Times New Roman">T</FONT>后得到的理论值<FONT face="Times New Roman">C</FONT>与实验值<FONT face="Times New Roman">C</FONT>的偏差最小。</P>
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<P><FONT face="Times New Roman">C</FONT>的表达式为</P>
<P><FONT face="Times New Roman">C = (1 - P)*0.375 * 2 * X * X / (3 + exp(2 * -Y / 1.3804 / 0.5035 / T)) / (T - Z) + P*0.9375 * X * X / T;</FONT></P>
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<P><FONT face="Times New Roman"></FONT></P>
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<P><FONT face="Times New Roman">T</FONT>为温度值,相应的有<FONT face="Times New Roman">C</FONT>值</P>
<P><FONT face="Times New Roman">X, Y, Z, P</FONT>即是<FONT face="Times New Roman">4</FONT>个参量。</P>
<P>他们相应的范围是:</P>
<P><FONT face="Times New Roman">2.0 < X < 2.3</FONT></P>
<P><FONT face="Times New Roman">-250 < Y < -100</FONT></P>
<P><FONT face="Times New Roman">-10 < Z < 10</FONT></P>
<P><FONT face="Times New Roman">0 < P < 1</FONT></P>
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<P>如用<FONT face="Times New Roman">Ccal</FONT>表示理论值,<FONT face="Times New Roman">Cobs</FONT>表示实验值</P>
<P>使偏差最小的表示方法有如下两种:</P>
<P><FONT face="Times New Roman">1</FONT>.<FONT face="Times New Roman">R = </FONT>∑<FONT face="Times New Roman">[</FONT>(<FONT face="Times New Roman">Ccal</FONT>)<SUP><FONT face="Times New Roman">2 </FONT></SUP>—<FONT face="Times New Roman"> </FONT>(<FONT face="Times New Roman">Cobs</FONT>)<FONT face="Times New Roman"><SUP>2</SUP>] / </FONT>∑(<FONT face="Times New Roman">Cobs</FONT>)<SUP><FONT face="Times New Roman">2</FONT></SUP>最小,即最小二乘法的方法</P>
<P><FONT face="Times New Roman">2</FONT>.<FONT face="Times New Roman">F = </FONT>∑abs(<FONT face="Times New Roman">Ccal </FONT>—<FONT face="Times New Roman"> Cobs</FONT>)/ ∑<FONT face="Times New Roman">Cobs</FONT>最小</P>
<P>一般而言,取两者之一即可。</P>
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<P>输入:</P>
<P>温度<FONT face="Times New Roman">T</FONT>和函数<FONT face="Times New Roman">C</FONT>的实验值如下所示,第一行为实验值的组数。从第二行开始,第一列为<FONT face="Times New Roman">T</FONT>值,第二列为<FONT face="Times New Roman">C</FONT>值。</P>
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<P><FONT face="Times New Roman"></FONT></P>
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<P><FONT face="Times New Roman">56</FONT></P>
<P><FONT face="Times New Roman">5.03 0.000514065 </FONT></P>
<P><FONT face="Times New Roman">5.95 0.000430646 </FONT></P>
<P><FONT face="Times New Roman">6.91 0.000367362 </FONT></P>
<P><FONT face="Times New Roman">7.91 0.000319037 </FONT></P>
<P><FONT face="Times New Roman">9.02 0.000279105 </FONT></P>
<P><FONT face="Times New Roman">9.97 0.000252347 </FONT></P>
<P><FONT face="Times New Roman">11.97 0.000206212 </FONT></P>
<P><FONT face="Times New Roman">14 0.000175974 </FONT></P>
<P><FONT face="Times New Roman">16.01 0.000152473 </FONT></P>
<P><FONT face="Times New Roman">17.99 0.000134773 </FONT></P>
<P><FONT face="Times New Roman">20.01 0.000120235 </FONT></P>
<P><FONT face="Times New Roman">22.02 0.000108999 </FONT></P>
<P><FONT face="Times New Roman">24.07 9.96696e-005 </FONT></P>
<P><FONT face="Times New Roman">26 9.25233e-005 </FONT></P>
<P><FONT face="Times New Roman">28 8.68951e-005 </FONT></P>
<P><FONT face="Times New Roman">30.01 8.27466e-005 </FONT></P>
<P><FONT face="Times New Roman">32 7.99602e-005 </FONT></P>
<P><FONT face="Times New Roman">34.01 7.86814e-005 </FONT></P>
<P><FONT face="Times New Roman">36.01 7.87472e-005 </FONT></P>
<P><FONT face="Times New Roman">38.01 8.08994e-005 </FONT></P>
<P><FONT face="Times New Roman">40.02 8.50063e-005 </FONT></P>
<P><FONT face="Times New Roman">42.02 9.10851e-005 </FONT></P>
<P><FONT face="Times New Roman">44.02 9.94755e-005 </FONT></P>
<P><FONT face="Times New Roman">46.03 0.000110188 </FONT></P>
<P><FONT face="Times New Roman">48.04 0.000119992 </FONT></P>
<P><FONT face="Times New Roman">50.05 0.000131467 </FONT></P>
<P><FONT face="Times New Roman">55.06 0.000173395 </FONT></P>
<P><FONT face="Times New Roman">60.09 0.000226902 </FONT></P>
<P><FONT face="Times New Roman">65.08 0.000287305 </FONT></P>
<P><FONT face="Times New Roman">70.09 0.00035194 </FONT></P>
<P><FONT face="Times New Roman">75.14 0.000426695 </FONT></P>
<P><FONT face="Times New Roman">80.09 0.000488245 </FONT></P>
<P><FONT face="Times New Roman">84.93 0.000550004 </FONT></P>
<P><FONT face="Times New Roman">90.17 0.000623511 </FONT></P>
<P><FONT face="Times New Roman">95.18 0.000685893 </FONT></P>
<P><FONT face="Times New Roman">100.17 0.000746751 </FONT></P>
<P><FONT face="Times New Roman">111.32 0.000844032 </FONT></P>
<P><FONT face="Times New Roman">121.33 0.000928803 </FONT></P>
<P><FONT face="Times New Roman">131.28 0.000994824 </FONT></P>
<P><FONT face="Times New Roman">141.27 0.00104567 </FONT></P>
<P><FONT face="Times New Roman">151.2 0.00108171 </FONT></P>
<P><FONT face="Times New Roman">161.26 0.0011058 </FONT></P>
<P><FONT face="Times New Roman">171.17 0.00112035 </FONT></P>
<P><FONT face="Times New Roman">181.33 0.00112784 </FONT></P>
<P><FONT face="Times New Roman">191.13 0.00112936 </FONT></P>
<P><FONT face="Times New Roman">201.14 0.0011261 </FONT></P>
<P><FONT face="Times New Roman">211.23 0.00111928 </FONT></P>
<P><FONT face="Times New Roman">221.19 0.00110957 </FONT></P>
<P><FONT face="Times New Roman">231.25 0.00109793 </FONT></P>
<P><FONT face="Times New Roman">241.1 0.00108459 </FONT></P>
<P><FONT face="Times New Roman">251.21 0.00107006 </FONT></P>
<P><FONT face="Times New Roman">261.22 0.00105454 </FONT></P>
<P><FONT face="Times New Roman">271.1 0.00103891 </FONT></P>
<P><FONT face="Times New Roman">281.13 0.0010222 </FONT></P>
<P><FONT face="Times New Roman">291.19 0.00100484 </FONT></P>
<P><FONT face="Times New Roman">299.96 0.000985224 </FONT></P>
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<P>输出:</P>
<P>输出<FONT face="Times New Roman">4</FONT>个参量值及相应的<FONT face="Times New Roman">R,F</FONT>值(参见偏差表示方法)