Comprehension

निर्देश : निम्नलिखित प्रश्नों के लिए नीचे दिए गए कथनों पर विचार करें:

माना f : (-1, 1) → R एक अवकलनीय फलन है जहाँ f(0) = -1 और f’(0) = 1 माना h(x) = f(2f(x) +2) और g(x) = (h(x))2

g’(0) किसके बराबर है?

This question was previously asked in
NDA-II 2024 (Maths) Official Paper (Held On: 01 Sept, 2024)
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  1. -4
  2. -2
  3. 0
  4. 4

Answer (Detailed Solution Below)

Option 1 : -4
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व्याख्या:

दिया गया है:

f(0) = -1 और f'(0) = 1 मान लीजिये h(x) = f(2f(x) +2) और g(x) = (h(x))2

⇒ g(x) = (h(x))2

g'(x) = 2(h(x)).h'(x)

⇒ g'(0) = 2(h(0)).h'(0)

= 2f(2f (0) + 2).2

= 2f(0).2 = (-2).2 = -4

∴ विकल्प (a) सही है

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