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Wakana Moriguchi investigated how changing parameters a, b, c, and d in the trigonometric function y=asinb(x-c)+d affects the graph of the function. Through analyzing 7 graphs of trigonometric functions, they determined that a affects amplitude, b affects period, c affects horizontal shift, and d affects vertical shift. They made predictions about new functions and verified their predictions were correct by additional graphs. The investigation demonstrated how the parent trigonometric functions can be trans

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api-298369524

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EN