Is it a function and whats the domain and range
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Plz me plzzzzzzz i need and plz delte this after answer

How is working backward similar to solving an equation?

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.