Thrid calc problem (vectors again) thank u soo much!!! :)?

3. Let r(u) = %26lt;e^−u, e^u,sqr2u%26gt;


(a) (2 points) What is the domain of r(u)?


(b) (4 points) Find the equation of the tangent line to r(u) at u = 0.


(c) (4 points) Compute T(0), the unit tangent vector T(u) to r(u) at u = 0.


d)

Thrid calc problem (vectors again) thank u soo much!!! :)?
do you mean sqrt(2u) or square of (2u)? or sqrtu?


Let me know


I will get answers