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F(x)=3 cos (2x-pi) -1
HELP PLS!!

F(x)=3 cos (2x-pi) -1 HELP PLS!!-example-1
User Gfdsal
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I am confused on the terminology, but I do know that f(x) is the function graphed on the graph.
I sadly do not know what they mean by " smallest rate of change.
User Kevin Crowell
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