Question:
Mark $(\sqrt{)}$ against the correct answer in the following:
The value of $k$ for which $f(x)=\left\{\begin{array}{c}\frac{3 x+4 \tan x}{2}, \text { when } x \neq 0 \\ k, \text { when } x=0\end{array}\right.$ is continuous at $x=0$, is
A. 7
B. 4
C. 3
D. none of these
Solution:
$\therefore K=7 .$