Use a graphing calculator to graph Y1, Y2, and Y1 + Y2 on
Chapter 4, Problem 36(choose chapter or problem)
Use a graphing calculator to graph Y1, Y2, and Y1 + Y2 on the same screen. Evaluate each of the three functions at X = p6 , and verify that Y11p6 2 + Y21p6 2 = 1Y1 + Y22 1p6 2. See the discussion on addition of ordinates. Y1 = cos X, Y2 = sec X
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