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If Lim X → a X 5 − a 5 X − a = 405 , Find All Possible Values of A.

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प्रश्न

If \[\lim_{x \to a} \frac{x^5 - a^5}{x - a} = 405,\]find all possible values of a

 

 

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उत्तर

\[\lim_{x \to a} \left[ \frac{x^5 - a^5}{x - a} \right] = 405\]
\[ \Rightarrow 5 a^4 = 405\]
\[ \Rightarrow a^4 = 81\]
\[ \Rightarrow a^2 = 9\]
\[ \Rightarrow a = \pm 3\]

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अध्याय 29: Limits - Exercise 29.5 [पृष्ठ ३३]

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आर.डी. शर्मा Mathematics [English] Class 11
अध्याय 29 Limits
Exercise 29.5 | Q 14 | पृष्ठ ३३

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