. Given r(t)= cos ti + 2 cost j + √5 sin tk, for О< t < 2л a) Find the curvature of r(t) b) Find the unit tangent vector

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Q: Solve y"+10y+26y= y(0) = y'(0) = 0 <t<3 t3 or t<1 Give the solution for 1 ≤ t< 3 y(t) =

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