All published worksheets from http://sagenb.org
solve(6 - 2*(x - 3)==3 + x,x)
diff(x*csc(x^2))
integral(cos(2*x) ,x)
diff(1/2*sin(2*x))
def f(x): return (3-2*x^2)/(5*x^2+100*x) f(1000000)