मराठी

Evaluate limx→aa+2x-3x3a+x-2x

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प्रश्न

Evaluate `lim_(x -> a) (sqrt(a + 2x) - sqrt(3x))/(sqrt(3a + x) - 2sqrt(x))`

बेरीज
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उत्तर

We have `lim_(x -> a) (sqrt(a + 2x) - sqrt(3x))/(sqrt(3a + x) - 2sqrt(x))`

= `lim_(x -> a) (sqrt(a + 2x) - sqrt(3x))/(sqrt(3a + x) - 2sqrt(x)) xx (sqrt(a + 2x) + sqrt(3x))/(sqrt(a + 2x) + sqrt(3x))`

= `lim_(x -> a) (a + 2x - 3x)/((sqrt(3a + x) - 2sqrt(x))(sqrt(a + 2x) + sqrt(3x))`

= `lim_(x -> a) (((a - x))(sqrt(3a + x) + 2sqrt(x)))/((sqrt(a + 2x) + sqrt(3x))(sqrt(3a + x) - 2sqrt(x))(sqrt(3a + x) + 2sqrt(x))`

= `lim_(x -> a) ((a - x) sqrt(3a + x) + 2sqrt(x))/((sqrt(a + 2x) + sqrt(3x))(3a + x - 4x))`

= `(4sqrt(a))/(3 xx 2sqrt(3a))`

= `2/(3sqrt(3))`

= `(2sqrt(3))/9`.

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पाठ 13: Limits and Derivatives - Solved Examples [पृष्ठ २३३]

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एनसीईआरटी एक्झांप्लर Mathematics Exemplar [English] Class 11
पाठ 13 Limits and Derivatives
Solved Examples | Q 16 | पृष्ठ २३३

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