Answer :
Answer:
The oscillations of the sine function follow each other more rapidly the nearer x comes to a; if we assume x = a + -h and ask: by how much h must be diminished in order that the number under the sine may change by 2 r, it follows, putting 1 1 ~ + 2 - _, that 1 +2nh ' therefore 2 7th 2 h - hl — A +2 2h Thus the difference, the interval in ...
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