which type of language(regular,CFL,CSL,REC,RE) is generated by this?

Question

L={ a^mbⁿ|m <=2n+5}

Comments

I think cfl

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Just a clue to get the answer for this type of question:

for problem like this simply draw a graph.

m <= 2n+5

m-2n <= 5

(m/5) +(n/(-5/2)) <= 1

you will get infinite no. of solution.

so it is not regular.

Answer 1

Language is DCFL but not Regular.
It is DCFL so it must be NCFL, CSL, REC, RE too .

Comments

Let me also know the basic logic !!How  it is  DCFL  but not Regular ??

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how can u tell wheather that language is dcfl,do u have any logic please tell me