# Functions

:$$x+($rand1+1)*sin($$x*($rand2+1)+$rand3*pi)/2/($rand2+1)-4-$rand4*2

:-$$x+($rand1+1)*sin($$x*($rand2+1)+$rand3*pi)/2/($rand2+1)+4+$rand4*2

:$$x+($rand1-0.5)*($$x-5)^2/5-4-$rand2*2

:$$x-($rand1-0.5)*($$x-5)^2/5-4-$rand2*2

:-$$x+($rand1-0.5)*($$x-5)^2/5+4+$rand2*2

:-$$x-($rand1-0.5)*($$x-5)^2/5+4+$rand2*2

:exp(($$x+$rand1*2)/(5+$rand1*2))*2-5-$rand2*3

:-exp(($$x+$rand1*2)/(5+$rand1*2))*2+5+$rand2*3

:atan(($$x-2-$rand1*6)*(0.5+$rand2*2))*(3+$rand3*4)

:-atan(($$x-2-$rand1*6)*(0.5+$rand2*2))*(3+$rand3*4)

:($$x-3-$rand1*4)^3/(20+$rand2*10)+($rand3/6)*$$x

:-($$x-3-$rand1*4)^3/(20+$rand2*10)-($rand3/6)*$$x

