1.5 Mathematical operations One of the greatest parts of numpy arrays is that you can change all elements using a single line of code! This greatly simplifies a lot of the work we've been doing with lists and loops. Let's try some mathematical operations on arrays. Make an array that contains the numbers 0 through 9 . Multiply all the elements by 3 , then subtract 7 . \# Put your code here.' Make an array of the first 100 positive integers and save it as first_100. Compute and print the square of the array as print (first_100**2) . \# Put your code here