用MATLAB解四元一次方程,(1)a+2b+2c+d=1;4a+4b+2c=1.714;2d=0.730;-74.81a+52.26b+226.73c-393.509d=-191.311(2)a+2b+c+d=1;4a+6b+c=1.714;c+2d=0.730;-74.81a-84.68b-110.525c-393.509d=-191.311(3)2a+2b+d=1;2a+4b+2c=1.714;2d=0.730;226.73a+52.26b-393.509d
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用MATLAB解四元一次方程,(1)a+2b+2c+d=1;4a+4b+2c=1.714;2d=0.730;-74.81a+52.26b+226.73c-393.509d=-191.311(2)a+2b+c+d=1;4a+6b+c=1.714;c+2d=0.730;-74.81a-84.68b-110.525c-393.509d=-191.311(3)2a+2b+d=1;2a+4b+2c=1.714;2d=0.730;226.73a+52.26b-393.509d
用MATLAB解四元一次方程,
(1)a+2b+2c+d=1;4a+4b+2c=1.714;2d=0.730;-74.81a+52.26b+226.73c-393.509d=-191.311
(2)a+2b+c+d=1;4a+6b+c=1.714;c+2d=0.730;-74.81a-84.68b-110.525c-393.509d=-191.311
(3)2a+2b+d=1;2a+4b+2c=1.714;2d=0.730;226.73a+52.26b-393.509d=-191.311
(4)a+2b+d=1;4a+2b+2c=1.714;d=0.730;-74.81a+52.26b+226.73c-110.525d=-191.311
用MATLAB解四元一次方程,(1)a+2b+2c+d=1;4a+4b+2c=1.714;2d=0.730;-74.81a+52.26b+226.73c-393.509d=-191.311(2)a+2b+c+d=1;4a+6b+c=1.714;c+2d=0.730;-74.81a-84.68b-110.525c-393.509d=-191.311(3)2a+2b+d=1;2a+4b+2c=1.714;2d=0.730;226.73a+52.26b-393.509d
1
a=-0.347
b=1.061
c=-0.569
d=0.365
2
a=-0.234
b=0.456
c=-0.086
d=0.408
3
a=-0.368
b=0.686
c=-0.146
d=0.365
4
a=0.638
b=-0.184
c=-0.235
d=0.73
可以用行列式来做,但这里不好写啊。。。