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Evaluate limx→0 sin(2+x)-sin(2-x)x - Mathematics

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प्रश्न

Evaluate `lim_(x -> 0)  (sin(2 + x) - sin(2 - x))/x`

योग
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उत्तर

We have `lim_(x -> 0)  (sin(2 + x) - sin(2 - x))/x`

= `lim_(x -> 0) (2cos  ((2 + x + 2 - x))/2 sin  ((2 + x - 2 + x))/2)/x`

= `lim_(x -> 0) (2cos 2sinx)/x`

= `2cos 2 lim_(x -> 0)  sinx/x`

= 2cos 2 as `lim_(x -> 0)  sinx/x` = 1

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अध्याय 13: Limits and Derivatives - Solved Examples [पृष्ठ २२९]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 11
अध्याय 13 Limits and Derivatives
Solved Examples | Q 5 | पृष्ठ २२९

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