# 1 : prove : 0 = 1 - a XXXXXXXXXXan. please prove it by induction . # 2 : a) how many unbounded regions are formed by n lines in general position in the plane. b): what is the minimum number of...

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# 1 : prove : 0 < a="" i="">< 1="" ,="" i="1" ,="" 2="" ,="" ......="" m.="" (="" 1="" -="" a1="" )="" .........(="" 1="" -="" an="" )="">= 1 - a1 - ....... - an. please prove it by induction .


# 2 :


a) how many unbounded regions are formed by n lines in general position in the plane. b): what is the minimum number of regions formed by n different lines in the plane - No restriction. prove it by induction .



Answered Same DayDec 22, 2021

Answer To: # 1 : prove : 0 = 1 - a XXXXXXXXXXan. please prove it by induction . # 2 : a) how many unbounded...

David answered on Dec 22 2021
120 Votes
# 1 : prove : 0 < a i < 1 , i = 1 , 2 , ...... m. ( 1 - a1 ) .........( 1 - an ) >= 1 - a1 - ....... - an. please
prove it by induction .
Sol:
For n=1,
For n=2,
( )( )
Let the given expression is true for n terms,
( )( ) ( )
For n+1 terms,
( )( ) ( )( )
( )( ) ( ) ( )( ) ( )
( )( ) ( )
Since ,
( )( ) ( )
( )( ) ( )
Hence,
( )( ) ( ) ( )( ) ( )

Hence, for any natural number n,
( )( ) ( )
# 2:
a. How many unbounded regions are formed by n...
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