> plot([x*ln(x-3)+sqrt(1+2*x),(-55*x^2+674*x-1654)/54],x=2..6,color=[black,blue],style=[line,point]);

> plot([1/sqrt(x),(3*x^2-40*x+240)/256],x=2..6,color=[black,blue],style=[line,point]);

> plot([(x-4)*cos(Pi*x/8),-Pi*(x^2-8*x+16)/8],x=2..6,color=[black,blue],style=[line,point]);

>