Question: [ 1 0 points ] Prove that for every CFG in Chomsky normal form, and for every string w that has length n 1 and

[10 points] Prove that for every CFG in Chomsky normal form, and for every string w that has length n1 and is generated by the grammar, each derivation of w uses exactly 2n-1 steps.
[10 points] Prove that for every CFG in Chomsky normal form,

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