JEE Math Practice Question
If the function $$ f(x)=\left\{\begin{array}{l} \frac{2}{x}\left\{\sin \left(k_1+1\right) x+\sin \left(k_2-1\right) x\right\}, \quad x0 \end{array}\right. $$ is continuous at $x=0$, then $k_1^2+k_2^2$ is equal to :
- A.5
- B.10
- C.20
- D.8
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