$831-33$ Find parametric equations for the tangent line to the $-$ wine with the given parametric equations at the specified point. llustrate by graphing both the curve and the tangent line on a sammon screen.

$31.x-1,y=e^{-1},z=2t-t^2$;$,(0,1,0)$

$32.x=2cost,y=2sint,z=4cos2r$;$,(\sqrt[\phantom{2}]{3},1,2)$

$33.x=tcost,y=t,z=tsint$;$,(-,,0),$ question no $31,33$