Question: Find the mass of a thin wire lying along the curve r(t) = 2ti + 2tj + (4 - t 2 )k, 0 t

Find the mass of a thin wire lying along the curve r(t) = √2ti + √2tj + (4 - t2)k, 0 ≤ t ≤ 1, if the density at t is 

(a) δ = 3t and 

(b) δ = 1.

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