A random variable XXX has PDF f(x)=2(1−x)f(x) = 2(1-x)f(x)=2(1−x) for x∈[0,1]x \in [0, 1]x∈[0,1]. What is the median mmm?
1−221 - \frac{\sqrt{2}}{2}1−22
0.50.50.5
12\frac{1}{2}21
22\frac{\sqrt{2}}{2}22