R(t)=< sin (t), 2 cos (t),t > parameterize a curve C in

1) Sketch the curve C over 0 t

2) Find the normal and tangential components of acceleration as functions of parameter t. determine the normal and tangential components of acceleration at time t= 0, t= /2, t=

3) Determine the curvature of the curve C as a function of parameter t, that is K9t) determine the cueveture at t=0, t= /2, t=