Linear Algebra, Math, Mathematics, Python, Jupyter Notebook.
help fix this issue. x = np.arange(4) x.shape (4,) # Adds a new dimension x[:, np.newaxis] array([[0], [1], [2], [3]]) A = np.random.randn(4,3) A array([[ 0.37898843, 0.42689999, -1.34790859], [ 1.59115004, 0.59600385, 0.25510038], [ 1.08659174, -1.6311077, -0.78809825], [ 1.34425773, 0.07104051,