Question: 1 - a ) Why do we need to keep track of which nodes we have visited? What will happen if we don't? 1 -

1-a) Why do we need to keep track of which nodes we have visited? What will happen if we
don't?
1-b) What are two problems with Dijkstra's algorithm that A** search solves? How does it solve
them?
1-a) Why do we need to keep track of which nodes

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