Final answer:
The product of M1x-1 and N4x1 will have dimensions of 1x1.
Step-by-step explanation:
The product of M1x-1 and N4x1 will have dimensions of 1x1.
When multiplying two terms with exponents, you add the exponents. In this case, x-1 and x1 will cancel out, leaving x0. And any number (except 0) raised to the power of 0 is equal to 1. Therefore, the product will have a single term with an exponent of 0, giving it dimensions of 1x1.