1 1-D ARRAY: VECTOR (a) Define two evenly spaced row vectors: vec1 of which elements start from 1 to 9 with 9 entries and vec2 that is between 18 and 1 with step size 2 using linspace and colon, respectively. Then store lengths of vec1 and vec2 to veclLength and vec2Length. (b) Calculate the following products: Store the product of all elements of vec1 to vec1Product. Calculate the elementwise product of vec1 and vec2, then assign the result to vecProduct. Calculate the dot product of vec1 and vec2 in three ways using dot, matrix multiplication, and sum with elementwise multiplication. Store the results to dotProduct1, dotProduct2, and dot Product3