Bailey, Frederick H. (Frederick Harold), 1865- · Boston, London, Ginn & Co. · leaf 45
T. For sin (x ± tt) = — sin x, and sin (x ± 2;r) = sin x. Hencethe curve y = sin x is composed of an indefinite number of arches extend-ing both to the left and to the right, the arches being alternately aboveand below the axis of x, and each arch being of the same shape as thatbetween x = 0 and x=… … Fig. 18. It is to be noticed that the curve approaches the axis of y in the nega-tive direction, but never reaches it. Tliis arises from the fact that thelogarithm of a quantity increases negatively without limit as the quantityapproaches zero. It is also to be noticed that we have no portion of…
Geometry, Analytic
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