Problem Solving Heuristics flashcards
8 practice cards drawn from the Problem Solving Heuristics lessons. Tap a card to turn it over. Every answer is checked against the lesson it came from.
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Why undo the operations in reverse order?
the last thing done is the first to undo
from “Working Backwards from the Goal”
A number is doubled, then 7 is added, giving 23. What was it?
8
from “Working Backwards from the Goal”
What is the point of solving a smaller version first?
the small case shows the method
from “Solving a Simpler Problem First”
You find a rule from three small cases. What must you still do?
justify it for every case
from “Solving a Simpler Problem First”
What does a special case of a proved result tell you?
it must hold, since it is one of the cases covered
from “From a Special Case to Every Case”
You have checked a claim for n = 1 to 10. What do you have?
a conjecture
from “From a Special Case to Every Case”
An argument uses the statement it is trying to prove. What is that called?
assuming the conclusion
from “Finding the Flaw in an Argument”
From an argument concludes x = 3. What is missing?
the root x = −3
from “Finding the Flaw in an Argument”