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JEE Mains · Maths · STD 11 - 12. limits

જો \(\lim _{x \rightarrow 0} \frac{ e ^{( a -1) x}+2 \cos b x+( c -2) e ^{-x}}{x \cos x-\log _{ e }(1+x)}=2\) હોય, તો \(a ^2+ b ^2+ c ^2=\) ___ .

  1. A 5
  2. B 3
  3. C 7
  4. D 9
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Answer & Solution

Correct Answer

(C) 7

Step-by-step Solution

Detailed explanation

\(\lim _{x \rightarrow 0} \frac{\left(1+(a-1) x+\frac{(a-1)^2 x^2}{2!}\right)+2\left(1-\frac{b^2 x^2}{2!}\right)+(c-2)\left(1-x+\frac{x^2}{2!}\right)}{x\left(1-\frac{x^2}{2!}\right)-\left(x-\frac{x^2}{2} \ldots\right)}=2\)…
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