pdas with two stacks are strictly more powerful than pdas with one stack. prove that 2-stack pdas are not a valid model for cfls by giving an example of a language that is not context-free and yet accepted by a 2-stack pda. describe (no math necessary) how a 2-stack pda would accept that language.

A Turing machine is equivalent to a PDA with two stacks. We can use the fact that a TM is exactly as powerful as a two-tape TM to demonstrate that it is at least as strong as a two-stack PDA.A computational model called Two-Stack PDA is based on Pushdown Automata (PDA) generalization, and a nondeterministic Two-Stack PDA is identical to a deterministic Two-Stack PDA. a condition of limited control. the reading input sign. the symbol at the top of each of its stacks. Our presumption is that a PDA absorbs input by eating it and going into an accepting state. This strategy is known as acceptance by final state.Learn more about control here-https://brainly.com/question/28082702#SPJ4