|a1'| |a11 a12| |a1| |k1||a2'|= |a21 a22| |a2| + |k2| ①|b1'| |a11 a12| |b1| |k1||b2'|= |a21 a22| |b2| + |k2| ②|c1'| |a11 a12| |c1| |k1||c2'|= |a21 a22| |c2| + |k2| ③解三个方程组,求a11,a12,a21,a22,k1,k2的值,对了再加分.谢谢(^o^)ly

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|a1'| |a11 a12| |a1| |k1||a2'|= |a21 a22| |a2| + |k2| ①|b1'| |a11 a12| |b1| |k1||b2'|= |a21 a22| |b2| + |k2| ②|c1'| |a11 a12| |c1| |k1||c2'|= |a21 a22| |c2| + |k2| ③解三个方程组,求a11,a12,a21,a22,k1,k2的值,对了再加分.谢谢(^o^)ly
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|a1'| |a11 a12| |a1| |k1||a2'|= |a21 a22| |a2| + |k2| ①|b1'| |a11 a12| |b1| |k1||b2'|= |a21 a22| |b2| + |k2| ②|c1'| |a11 a12| |c1| |k1||c2'|= |a21 a22| |c2| + |k2| ③解三个方程组,求a11,a12,a21,a22,k1,k2的值,对了再加分.谢谢(^o^)ly
|a1'| |a11 a12| |a1| |k1|
|a2'|= |a21 a22| |a2| + |k2| ①
|b1'| |a11 a12| |b1| |k1|
|b2'|= |a21 a22| |b2| + |k2| ②
|c1'| |a11 a12| |c1| |k1|
|c2'|= |a21 a22| |c2| + |k2| ③
解三个方程组,求a11,a12,a21,a22,k1,k2的值,对了再加分.
谢谢(^o^)lyftcl85
其实是需要把解这方程组的方法,编成C++的,想知道解的过程,
不懂MATLAB...((((^_^;)

|a1'| |a11 a12| |a1| |k1||a2'|= |a21 a22| |a2| + |k2| ①|b1'| |a11 a12| |b1| |k1||b2'|= |a21 a22| |b2| + |k2| ②|c1'| |a11 a12| |c1| |k1||c2'|= |a21 a22| |c2| + |k2| ③解三个方程组,求a11,a12,a21,a22,k1,k2的值,对了再加分.谢谢(^o^)ly
还真不知道C怎么编……你去C语言区问问吧.
我用的是mathematica,把6个方程老老实实输入就得到解了.
解如下:
a11=-(a2b1'-a1'b2-a2c1'+b2c1'+a1'c2-b1'c2)/(-a2b1+a1b2+a2c1-b2c1-a1c2+b1c2)
a12=-(a1'b1-a1b1'-a1'c1+b1'c1+a1c1'-b1c1')/(-a2b1+a1b2+a2c1-b2c1-a1c2+b1c2)
a21=-(a2'b2-a2b2'-a2'c2+b2'c2+a2c2'-b2c2')/(a2b1-a1b2-a2c1+b2c1+a1c2-b1c2)
a22=-(-a2'b1+a1b2'+a2'c1-b2'c1-a1c2'+b1c2')/(a2b1-a1b2-a2c1+b2c1+a1c2-b1c2)
k1=-(-a2b1'c1+a1'b2c1+a2b1c1'-a1b2c1'-a1'b1c2+a1b1'c2)/(-a2b1+a1b2+a2c1-b2c1-a1c2+b1c2)
k2=-(-a2'b2c1+a2b2'c1+a2'b1c2-a1b2'c2-a2b1c2'+a1b2c2')/(a2b1-a1b2-a2c1+b2c1+a1c2-b1c2)

[a11,a12,a21,a22,k1,k2]=solve('a11*a1+a12*a2+k1-a10','a11*b1+a12*b2+k1-b10','a11*c1+a12*c2+k1-c10','a21*a1+a22*a2+k2-a20','a21*b1+a22*b2+k2-b20','a21*c1+a22*c2+k2-c20')
用这样一个MATLAB函数求解,但是答案是:
...

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[a11,a12,a21,a22,k1,k2]=solve('a11*a1+a12*a2+k1-a10','a11*b1+a12*b2+k1-b10','a11*c1+a12*c2+k1-c10','a21*a1+a22*a2+k2-a20','a21*b1+a22*b2+k2-b20','a21*c1+a22*c2+k2-c20')
用这样一个MATLAB函数求解,但是答案是:
Warning: Explicit solution could not be found.%不可解
> In solve at 140

a11 =

[ empty sym ]


a12 =
[]
a21 =
[]
a22 =
[]
k1 =
[]
k2 =
[]
把这个问题分开,只求一半:
>> [a11,a12,k1]=solve('a11*a1+a12*a2+k1-a10','a11*b1+a12*b2+k1-b10','a11*c1+a12*c2+k1-c10')
Warning: Explicit solution could not be found.
> In solve at 140

a11 =

[ empty sym ]


a12 =
[]
k1 =
[]
仍然无解。
但代入部分数字之后可解,考虑为MATLAB的局限性或其他问题。。。没能解决问题,汗颜。。。

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等差数列中a11+a12为什么等于a1+a22 a1+a2=a a11+a12=b求a41+a42 Excel高手:选取一组数A1:A10,里面最接近A11的单元格并输出到A12! 等差数列中,a1+a12=10,则a2+a3+a10+a11等于 等比数列{an},a1*a12=5,求a8*a9*a10*a11=___. 等差数列a1+a2+a3=15,a1a2a3=80,则a11+a12+a13=? 在等差数列中若a1+a2+...+a10=65 a11+a12+...+a20=165则a1 的值? |a1'| |a11 a12| |a1| |k1||a2'|= |a21 a22| |a2| + |k2| ①|b1'| |a11 a12| |b1| |k1||b2'|= |a21 a22| |b2| + |k2| ②|c1'| |a11 a12| |c1| |k1||c2'|= |a21 a22| |c2| + |k2| ③解三个方程组,求a11,a12,a21,a22,k1,k2的值,对了再加分.谢谢(^o^)ly 等比数列{an}中,a1+a2+a3=30,a4+a5+a6==60,求a10+a11+a12.等比数列{an}中,a1+a2+a3=30,a4+a5+a6==60,求a10+a11+a12. 等差数列an中a1+a2+a3=32,a11+a12+a13=118.a4+a10为多少 设{an}是公差大于0的等差数列,若a1+a2+a3=80,则a11+a12+a13=? 求一道等差数列的题目!a1+a2+.+a5=30 a6+a7+.a10=80 求a11+a12+.a15 等比数列an中,若a1+a2+a3=30,a7+a8+a9=120,则a10+a11+a12 运筹学求解十二元一次不等式组,会lingo的进A11+A10+A7+A8≥60 A1+A12+A9+A10≥30 A2+A1+A10+A11≥30 A3+A2+A11+A12≥30 A4+A3+A12+A1≥70 A5+A4+A1+A2≥80 A12+A11+A8+A9≥40 A6+A5+A2+A3≥80 A7+A6+A3+A4≥80 A8+A7+A4+A5≥60 A9+A8+A5+A6 在等差数列AN中若A1+A6+A8+A10+A12=120,则A9-1/3A11=? 等比数列{an}中,a1+a2+a3=2,a4+a5+a6=4,则a10+a11+a12等于?过程,谢谢! 会整数规划和MATLAB的进A11+A10+A7+A8≥60 A1+A12+A9+A10≥30 A2+A1+A10+A11≥30 A3+A2+A11+A12≥30 A4+A3+A12+A1≥70 A5+A4+A1+A2≥80 A12+A11+A8+A9≥40 A6+A5+A2+A3≥80 A7+A6+A3+A4≥80 A8+A7+A4+A5≥60 A9+A8+A5+A6≥62 A10+A9+A6+A7≥70其 等比数列an中,a1+a2+a3=6,a4+a5+a6=18,则a10+a11+a12=?