An LTI system of unit impulse response h() is subjected to an input signal x(7), resulting in an output y(t). x(t)=\left\{\begin{array}{ll}

2 t & 0

0, & \text { elsewhere }

\end{array} \quad \text { and } h(t)=\delta(t-2)\right. (i) Find the convolution, y(t) = x(t) * h(t). (ii) Sketch your result for y(), clearly labeled and expressed as a function of t. (iii)Is this a causal or non-causal system? Justify your answer.