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Questions  >>  CBSE XII  >>  Math  >>  Model Papers
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Find k, if $f(x) = \left\{ \begin{array} {1 1} k \sin \frac{\pi}{2}(x+1), & \quad x \leq 0 \\ \frac{\tan x - \sin x}{x^3} ,& \quad x >0 \end{array} \right. $ is a continuous at x=0

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