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【求助】Matlab编程求解方程
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已知：x=1400:0.01:2200;y=0:0.01:800 解方程：-291.275+0.1867*x+0.4028*y+12.1857*z+2.54*10^-6*x*y-0.00118*x*z-0.00048*y*z-4.5*10^-5*x^2-0.00035*y^2-0.2807*z^2=90 求Z. |
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