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\section{Question 2.1.2}
        \begin{equation}
        \begin{align*}
        $\nabla F(x,y) = & (\frac{\partial f(x^2 + y^2)}{\partial x}, \frac{\partial f(x^2 + y^2)}{\partial y}) \\ = & (f_x'(x^2+y^2) \cdot 2x, f_y'(x^2+y^2) \cdot 2y)$
        \end{align*}
        \end{equation}

I found $\nabla F(x,y)$ at an arbitrary point. The question is "to show that it is parallel to the straight line segment joining the point and the origin." I do not understand anything of this question, I do not even know how to visualise this.
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