What is the graph of the exponential function y = 2^x? Is it increasing or decreasing? Describe its behavior as x approaches positive and negative infinity.
+
What is the dimension of the subspace spanned by {(1, 2, -1), (3, -1, 0), (-2, 4, 1)}?
+
What is the probability of getting exactly 4 heads in 6 coin flips, assuming a fair coin?