Final answer:
Yes, the vector space of all polynomials is infinite-dimensional because we can find an infinite number of linearly independent vectors.
Step-by-step explanation:
Yes, the vector space of all polynomials is infinite-dimensional. We can show this by finding an infinite number of linearly independent vectors.
For example, consider the set of polynomials {1, x, x^2, x^3, ...}. These polynomials are all linearly independent because no polynomial in the set can be written as a linear combination of the others.
Since we can keep adding higher powers of x to this set to create more linearly independent vectors, we have an infinite number of linearly independent vectors and the vector space of all polynomials is infinite-dimensional.