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sin(x^3)
y = 0.0331-0.05*x^2-0.0331*x;-0.05;-0.0331;0.0331
-(((-0.0331)^2-(-0.05*0.0331*4))/(-0.05*4))
-(-0.0331/(-0.05*2))
0.0331-(0.05*0^2)-(0*0.0331)
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