density function

#1
I am struggling with density functions. Can you help with this?
Let Y have the density function given by


.4, -1 < y <= 0
f(y) = .4 +cy, 0 < y <=1
0, elsewhere.


a.) Find c.
b.) Find F(y).
c. ) Graph f(y) and F(y).

Thanks for your help.
 
E

elnaz

Guest
#2
Hello
c=.4

F(y): .4y+.4 -1<y<=0

.4y+.2(y^2) 0<y<=1
1 y=>1
0 y<=-1
excuse me i cant draw graph ,sorry for that.