MCQ
જો $\mathop {\lim }\limits_{x \to 1} \frac{{{x^2}\,\, - \,ax\, + \,b}}{{x\, - \,1}}\,\, = \,3,$ થાય તો $a + b$ =
- A$5$
- B$1$
- C$-4$
- ✓$-7$
$1 - a + b = 0\,\,\,\,\,\,\,.......\left( i \right)$
$2 - a = 5\,\,\,\,\,\,\,.....\left( {ii} \right)$
$ \Rightarrow a + b = - 7$
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