Please try to write the written explanations as best as possible.

Take a picture of your Handwritten answers and upload it below. Do not rewrite the questions, just the answers. 1. a) Write an expression for a Riemann sum of a function re) . Explain the meaning of the notation that you use. b) If re) takes both positive and negative values, what is the geometric interpretation of a Riemann sum? Illustrate with a diagram. 2. a) State both parts of the Fundamental Theorem of Calculus. b) State the Net Change Theorem. 3. a) What is the geometric interpretation of t / f(:c)d.-r: if at) takes on both positive and negative 13 values? Illustrate with a diagram. b) Explain the meaning of the indefinite integral [am e) State the Substitution Rule and explain how does it make the integration process easier