mata22MATA22 Final Exam Review Seminar Notes Alice Huang April 2 2019 1 Complex Numbers Problem Roots of Complex Number. Find all complex numbers x such that x4 = −1. Solution:Quiz: MATA22 Notes Share. 1 5. Question 1 of 5. What is the definition of a vector space according to the reference text? A A nonempty set of objects with two operations: vector