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12-90.
  1. Examine the integral . Homework Help ✎

    1. Explain why this integral cannot be evaluated exactly using any of our integration tools.

    2. Estimate , using a Riemann sum with 5 left-endpoint rectangles.

    3. Use a substitution in the expansion of f(x) = ex to get a 6th degree polynomial approximation of .

    4. Estimate using the polynomial of part (c).

    5. How could we have improved our answers to parts (b) and (d)?

Use more ________.