3 years ago

In two or more complete sentences describe why the range of y = cos(x) is -1 ≤ y ≤ 1

1 answer:

galina1969 [7]3 years ago

4 0

The domain would be the x variable, which is undefined so can be any real number.

The magnitude of the term is the absolute value of the coefficient. Since the equation does not contain a coefficient, the magnitude becomes 1.

The lower bound of the range is the negative magnitude which would be -1 and the upper bound is the magnitude, which is 1.

So the range is equal to -1 ≤ y ≤ 1

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