β=510/19z=x ysk10k^6-10>=10k>=5
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β=510/19z=x ysk10k^6-10>=10k>=5
解方程 x(x+y+z)=6 y(x+y+z)=12 z(x+y+z)=18
解方程组{x(x+y+z)=6,y(x+y+z)=12,z(x+y+z)=18
解方程组:{x(x+y+z)=6 {y(x+y+z)=9 {z(x+y+z)=10
方程组:{x+y-z=6,x+z=16,x-y+2z=17
matlab中Index exceeds matrix dimensions.错误function [x,m]=g1(x)syms z k m x hz(1)=30;z(2)=68;z(3)=75;z(4)=82;z(5)=82;z(6)=77;z(7)=68;z(8)=68;z(9)=58;z(10)=51;z(11)=50;z(12)=41;z(13)=38;z(14)=35;z(15)=28;z(16)=25;z(17)=18;z(18)=15;z(19)=12;z(20)=1
β=510/19z=x y10 x 5当x>-5时
(x+y-z)(x-y+z)=
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