Consider the vectors \(\mathbf{a}, \mathbf{b}, \mathbf{c}, \mathbf{d}\) in the picture below:

Consider the list of dot products \(\mathbf{a}\bullet \mathbf{b}, \mathbf{a} \bullet \mathbf{c}, \mathbf{a} \bullet \mathbf{d},\mathbf{b}\bullet \mathbf{c}, \mathbf{b} \bullet \mathbf{d}, \mathbf{c} \bullet \mathbf{d}.\)

For each dot product, enter in positive if it's positive, negative if it's negative, and 0 if it's equal to zero. Answer with the resulting list.

Guest Feb 9, 2019