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JEE Mains · Maths · STD 12 - 5. continuity and differentiation

माना \(f: R \rightarrow R c \in R\) पर अवकलनीय है तथा \(f( c )=0\) है। यदि \(g ( x )=|f( x )|\), तो \(x = c\) पर, \(g\)

  1. A अवकलनीय है, यदि \(f^{\prime}( c )=0\)
  2. B अवकलनीय है, यदि \(f^{\prime}( c ) \neq 0\)
  3. C अवकलनीय नहीं है।
  4. D अवकलनीय नहीं है, यदि \(f^{\prime}( c )=0\)
Verified Solution

Answer & Solution

Correct Answer

(A) अवकलनीय है, यदि \(f^{\prime}( c )=0\)

Step-by-step Solution

Detailed explanation

\(g'\left( c \right) = \mathop {\lim }\limits_{h \to 0} \frac{{\left| {f\left( {c + h} \right)} \right| - \left| {f\left( c \right)} \right|}}{h}\) \(\because \) \(f(c)=0\) \( = \mathop {\lim }\limits_{h \to 0} \frac{{\left| {f\left( {c + h} \right)} \right|}}{h}\)…
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