Question: For the function given below, (a) use the product-to-sum formulas to express the product as a sum, and (b) use the method of adding y-coordinates


For the function given below, (a) use the product-to-sum formulas to express the product as a sum, and (b) use the method of adding y-coordinates to grach the function on(a) G(x)=(b) Choose the correct graph belowG(x) = cos(4x) cos(2x)
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