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JEE Mains · Maths · STD 11- 2. Relation and Function

यदि फलन \( f(x)=\log_{(10x^{2}-17x+7)}(18x^{2}-11x+1) \) का प्रांत \( (-\infty,a)\cup(b,c)\cup(d,\infty)-\{e\} \) है, तो \( 90(a+b+c+d+e) \) का मान ___ होगा।

  1. A 170
  2. B 177
  3. C 307
  4. D 316
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Answer & Solution

Correct Answer

(D) 316

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Detailed explanation

\(18 x^2-11 x+1>0\) \((2 x-1)(9 x-1)>0\) \(x<\frac{1}{9} \text { or } \frac{1}{2}0\) \((x-1)(10 x-7)>0\) \(x <\frac{7}{10}\) or \(1< x\) \(\&\ 10 x^2-17 x+7 \neq 1\)…
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