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syms n m x y S = solve( 'y = ( n - 2 ) * ( 1 - x / 200 )', 'y = 55 * ( n + n ^ 2 * m ) - x', x, y ); [ nn, mm ] = meshgrid( 0 : 0.1 : 10, 0 : 0.02: 0.3 ); y =double( subs( S.y, [ n, m ], { nn, mm } ... paradiseboy 发表于 2011-3-3 14:02
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