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Home > INT3 > Chapter 9 > Lesson 9.2.2 > Problem 9-109


Repeating wave curve, first visible, high & low points: (negative pi halves, comma 1) & (pi halves, comma negative 1).Susan knows how to shift to get the graph at right, but she wonders if it is possible to get the same graph by shifting .

  1. Is it possible to write a cosine function for this graph?

    Yes, it is.

  2. If you think writing a cosine function is possible, write an equation that has cosine. If you think writing one is impossible, explain why.

    The graph of starts at a maximum. This graph has a maximum at 

  3. Adlai says, “I can get that graph without shifting to the right or left.” What equation does he write?