Classical Mathematical Fallacies #1

This is a classical mathematical fallacies. At hindsight, everything looks perfectly fine.

"2=1" Mathematical Fallacy

“2=1” Mathematical Fallacy

So did you manage to spot the error? It is at line 5, where we divide both sides of the equation by a-b. Now this is mathematical alright, but in this case, it is not! notice that a-b=0 on the account that we started with a=b. And we need to be reminded that we cannot divide anything by zero.

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    • […] 13. Common Pitfalls in A’levels Math #3 14. Why is anything to the power of 0 always 1? 15. Classical Mathematical Fallacies #1 16. Classical Mathematical Fallacies #2 17. Classical Mathematical Fallacies #3 18. Confusion on […]

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