Найдите монотонность, ДАЮ 25 баллов!!!, :
1) f(x)= -[tex]x^{2}[/tex]+4x+1
2) f(x)= -[tex]\frac{1}{3}[/tex][tex]x^{3}[/tex]+[tex]\frac{1}{2}[/tex][tex]x^{2}[/tex]+2
3) f(x)= -[tex]\frac{1}{4}[/tex]-x+1
4) y=[tex]x^{3}[/tex]-2
1) f(x)= -[tex]x^{2}[/tex]+4x+1
2) f(x)= -[tex]\frac{1}{3}[/tex][tex]x^{3}[/tex]+[tex]\frac{1}{2}[/tex][tex]x^{2}[/tex]+2
3) f(x)= -[tex]\frac{1}{4}[/tex]-x+1
4) y=[tex]x^{3}[/tex]-2
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