plot pow(2*-1x,1/2)
plot pow(2*-1x,1/2)
plot pow(2*-1x,1/2)
plot pow(2*-1x,1/2)
plot pow(2*-1x,1/2)
plot pow(2*-1x,1/2)
plot pow(2*-1x,1/2)
plot pow(2*-1x,1/2)
plot pow(2*-1x,1/2)
plot pow(2*x-1,1/2)
plot x+ pow(2*x-1,1/2)
plot x
plot pow(x,1/2)
plot pow(2*x,1/2)
plot pow(2*x-1,1/2)
plot pow(2*x+1,1/2)