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Using complete sentences, explain the key features of the graph of the tangent function.

(algebra 2)

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The tangent function is periodic. It has a period of pi. The function from - pi/2 to pi/2 repeats itself again and again.

The tangent function is an odd function. That means it is symmetric to the origin. In algebraic terms this means that tan(-x) = - tan(x).

It forms an S shaped curve that goes through the origin. The function has discontinuities at multiples of pi/2. It has vertical asymptotes there. From the left it approaches positive infinity. From the right it approaches negative infinity.

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