MCQ
જો $\lim_{x \rightarrow \infty} \frac{x^2(m-1)-(m+n)x-2013}{x+1}=1$ તો $m=...........$ અને $n=...........$
- A$m=1,n=0$
- ✓$m=1,n=-2$
- C$m=1,n=1$
- D$m=1,n=-1$
$\lim_{x \rightarrow \infty} \frac{x^2(m-1)-(m+n)x-2013}{x+1}$
$=\lim_{x \rightarrow \infty}\frac{x^2(m-1)}{x+1}-\frac{(m+n)x}{x+1}-\frac{2013}{x+1}$
$=\lim_{x \rightarrow \infty}\frac{x(m-1)}{1+\frac{1}{x}}-\frac{(m+n)}{1+\frac{1}{x}}-\frac{2013}{x+1}$
$\Rightarrow$ લક્ષ અસ્તિત્વ ધરાવે છે, અને તે $1$ છે.
$m-1=0\Rightarrow m=1$
$-(m+n)=1$
$-m=n+1$
$n=-2$
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ના બીજો હોય તો તેના શિરોબિંદુ ...........હોય