4037.sagews

solve(6 - 2*(x - 3)==3 + x,x)

[x == 3]

diff(x*csc(x^2))

-2*x^2*csc(x^2)*cot(x^2) + csc(x^2)

integral(cos(2*x) ,x)

1/2*sin(2*x)

diff(1/2*sin(2*x))

cos(2*x)

def f(x):
    return (3-2*x^2)/(5*x^2+100*x)
f(1000000)

-1999999999997/5000100000000