 
1.    :−, + , + 2, + 3, + 4........
2. ℎ     :     
3.  :−   
4.  :−    
5.      =
 ,
  =
,ℎ  =
 ℎ  =
6.  ℎ   
= +
(
)
; =
    = 
7.  ℎ    
=
(
1
)
; = 
8.   =
(

)
9.       
=
{
2 +
(
1
)
}
10.      
=
{
2
(
1
)
}
11.     ℎ   
=
(
+
)
12. ℎ    = ,, +
13.    = 3, , + , + 3
14.    = 2, ,, + , + 2