The number of points in $(-\infty, \infty)$, for which $x^2-x \sin x-\cos x=0$, is
The number of points in $(-\infty, \infty)$, for which $x^2-x \sin x-\cos x=0$, is
- [IIT 2013]
- A
$6$
- B
$4$
- C
$2$
- D
$0$
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