【8×(X+19)】÷(X-12)>9 快 急死中国人拉 ··········
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【8×(X+19)】÷(X-12)>9 快 急死中国人拉 ··········
【8×(X+19)】÷(X-12)>9
快 急死中国人拉 ··········
【8×(X+19)】÷(X-12)>9 快 急死中国人拉 ··········
【8×(X+19)】÷(X-12)>9
8×(X+19)>9×(X-12)
解得:X<260且X≠12
用matlab求解一个优化问题(目标函数非线性,约束函数线性)min f(x)=12*x(1)+21*x(2)+21*x(3)+13*x(4)+20*x(5)+23*x(6)+15*x(7)+17*x(8)+27*x(9)+17*x(10)+19*x(11)+31*x(12)+200*[(x(1)+x(2)+x(3))^0.6+(x(4)+x(5)+x(6))^0.6+(x(7)+x(8)+x(9))
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要列式1/12x(-6)+(-1/2) 4x1x(-5) 3x(-2)x(-6)x(-5) (-5)x 8 x(-6)x(-0.25) (-0.125)x (-7) x 5 x(-16) (8/15)x 1.25 x 9/2(-3)x 5/6 x(-0.2)x(-2/7) (-2)x(-6/5)x 10/3 x(-1/4) (-19/14)x 3
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不等式|(x+3)/x|>(x+3)/x,不等式(x²-9)/(x-2)>0
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1.2x^2+x >02.x^2-3x-18≤03.-x^2+x≥3x+14.x(x+9)>3(x-3)