import "math.ang"

fn r_x(t: float) -> float {
    return 8.0*(exp(-t) - t)
}

fn r_y(t: float) -> float {
    return 5.0*(exp(-t) - t)
}

fn r(t: float) -> (float, float) {
    return (r_x(t), r_y(t))
}

println(r(1.0))