\begin{aligned} &\text { (e) For real vectors } \theta \in \mathbb{R}^{n} \text { and } x \in \mathbb{R}^{n}, h_{\theta}(x)=\theta_{1} x_{1}+\ldots+\theta_{n} x_{n} . \text { Evaluate the gradient }\\ &\nabla_{x} h_{\theta}(x)

\text { (with respect to } \left.x\right) \end{aligned}