x(-1/2)=-4

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Solution for x(-1/2)=-4 equation: 


2*x*sin(x)+(x^2-2)*cos(x)

(abs(x-1)-x+2)*(x^2+x-2) >= 0

3;5;1;4;3;4

-81/(8*x^2)

2;5;0;0;1;4

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