Answer Happy

(3) Approximate the length of the curve r(t)=⟨6sin(3t),4t,2e−2t⟩, for 1≤t≤2ac− curate to 3 decimal digits. (Set up the integral and use technology to approximate it's value accurate to 3 decimal digits.) (4) Find the curvature, κ, of r(t)=⟨cos(2t),3t,sin(2t)⟩ at the point t=π/6.