**Find the point on the curve r (t) = (2 cos t , 2 sin t, et), 0 ≤ t ≤ π, where the tangent line is parallel to the plane √3x+ y = 1.**

**Answer:**

**Find the point on the curve r (t) = (2 cos t , 2 sin t, et), 0 ≤ t ≤ π, where the tangent line is parallel to the plane √3x+ y = 1.**

**Answer:**