MCQ
$f(x)=\left\{\begin{array}{cc}\frac{\log \left(1+x+x^2\right)+\log \left(1-x+x^2\right)}{\sec X-\cos x} & ; x \neq 0 \\ k, & ; x=0\end{array}\right.$ જો વિધેય $f$ અને$x = 0$ આગળ સતત હોય, તો $k =\ .................$
- ✓$1$
- B$0$
- C$2$
- D$ - 1$
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