1. The problem statement, all variables and given/known data My teacher introduced the third dimension (## R^3 ##) and higher dimensions to my class using vectors. Later on, my teacher introduced functions of two or more variables and now there's no mention of vectors. I am confused as to how vectors (i + j + k) and functions of two or more variables f(x, y, z) are related. 2. Relevant equations N/A 3. The attempt at a solution I'm not sure how to start. Thank you all!