[math]f\left(x\right)=5x^3-28x^2+x-1[/math]
[math]f\left(x\right)=7x^{11}-5x^4+3x[/math]
[math]f\left(x\right)=cos\left(5x^2-4x+3\right)[/math]
[math]f\left(x\right)=5x^3-6x^2-x+cos\left(x^2-4\right)[/math]
[math]f\left(x\right)=x\left(x+3\right)\left(x-5\right)\left(x+2\right)[/math]
[math]f\left(x\right)=\left(x-2\right)^2\cdot\left(5x+3\right)^3[/math]
[math]f\left(x\right)=-6x+9x^3+7x^2+8x^7[/math]
[math]f\left(x\right)=\frac{\left(5x+3\right)}{x^2-2}[/math]
[math]f\left(x\right)=5^x+5x^4+3x^3-3[/math]
[math]f\left(x\right)=\sqrt{5}x[/math]
[math]f\left(x\right)=5\sqrt{x}[/math]
[math]f\left(x\right)=5x^4+3x^3-2x^2-9x+5+7x^{-2}[/math]
[math]f\left(x\right)=2x^{2,3}+x^{1,5}-12x^{1,3}[/math]
[math]f\left(x\right)=2,3x^7-3,96x^4-23,7x^6-0,1x^9[/math]
[math]f\left(x\right)=-6x+9x^3+7x^2+8x^7[/math]
[math]f\left(x\right)=-6x+9x^3+7x^2+8x^7[/math]
[math]f\left(x\right)=3[/math]