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a. y=2-4x
b. [tex]y=x^{2}+4x+15[/tex]
c. [tex]y=\frac{2x^{3}-3x+1}{2013}[/tex]
d.y= [tex]\frac{3x^{2}+x+1}{x^{4}-x^{2}-6}[/tex]
b. [tex]y=x^{2}+4x+15[/tex]
c. [tex]y=\frac{2x^{3}-3x+1}{2013}[/tex]
d.y= [tex]\frac{3x^{2}+x+1}{x^{4}-x^{2}-6}[/tex]
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