jnu sis 2011 doubt.

[Aish]

Some one please explain how to do que 20,21,22.

[Granpa Simpson]

For Q20, integrate the function over zero to 1, the area under the curve will be 1, put this and you will obtain the value of alpha, now put it in the pdf and integrate it over [0.25,0.75], u will get the answer.