$2\mathrm{.}1$ Briefly state why the following flows are classified as either one$-,$ two$-,$ or three$-$dimensional, and as either steady or unsteady. The

quantities a and b are constants.

vec$(V)=[(ax+t)e^{by}]hat(i)$

vec$(V)=(ax-by)hat(i)$

vec$(V)=$axhat$(i)+[e^{bx}]hat(j)$

vec$(V)=$axhat$(i)+b{x}^2$hat$(j^{})+$axhat$(k)$

vec$(V)=$axhat$(i^{})+[e^{bt}]hat(hat(j))$

vec$(V)=$axhat$(i)+b{x}^2$hat$(j)+$ayhat$(k)$

vec$(V)=$axhat$(i)+[e^{bt}]hat(j)+$ayhat$(k)$

vec$(V)=$axhat$(i^{})+[e^{by}]hat(tilde(j))+$azhat$(k)$