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Is |a|+ |b|> |a+b| ?
1. a^2 > b^2 2. |a| * b < 0
1. a^2 > b^2 say a= 4, b= 2, |a|+ |b| = 6, |a+b| = 6, 6>6 -- NO say a = -4, b = 2, |a|+ |b| = 6, |a+b| = 2, 6>2 -- YES Inconsistent answers
2.|a| * b < 0 => b<0 as |a|>=0. so, b is negative and a can be positive or negative. say a= 4, b= - 2, |a|+ |b| = 6, |a+b| = 2, 6>2 -- YES say a = -4, b = - 2, |a|+ |b| = 6, |a+b| = 6, 6>6 -- NO Inconsistent answers
Combine both statements -> a^2 > b^2 and b<0 a can be positive or negative say a= 4, b= - 2, |a|+ |b| = 6, |a+b| = 2, 6>2 -- YES say a = -4, b = - 2, |a|+ |b| = 6, |a+b| = 6, 6>6 -- NO
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