Self Doubt 5:Peter Linz(exercise 1.2)

Question

$L1={a^{n} b^{m};n>=0,m<n}$
$L2={a^{n} b^{(n-2)};n>=3}$
$L3=complement$ $of$ $L2.$

$L1-L3$  is?
According to  me $L1-L3$ is same as $L2$.
Please verify. 

Comments

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