How to understand this probability density function with continuous random variable Could anyone help me? I don't want the solution. Instead I'm just looking to understand what this means:
x 
2

Is this the Binomial Coefficient? How is this related with PDF?


It looks like the fraction bar is missing and that you want $\dfrac{x}{2}$. If that is the case, then the $PDF$ integrates to $1$.
Then you can use calculus or just geometric intuition to figure out the expected value.
