Help with these please

asked Apr 5, 2015 158k views

3 votes

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4 votes

12.

f( - 1 ) = ( - 1 )^2 - 1 = 0;
g ( 0 ) = ( 0 - 5 ) / 0 = ( - 5 ) / 0 It's impossible!
=> ( g o f )( - 1 ) isn't exist !

Paul Stearns answered Apr 9, 2015

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