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Playlist Logic and Proof 15 videos
If you already know what a conditional statement is, then you're smarter than you look. And boy do you look smart.
Formal proofs present the oh-so-mathematical evidence in two columns: one for the statement they are claiming is true, and the other for the reason...
Indirect proofs (or proofs by contradiction) prove their conclusion by showing that the opposite cannot be true. You can use this in math and in ar...
CAHSEE Math 6.5 Mathematical Reasoning 229 Views
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Description:
Mathematical Reasoning Drill 6, Problem 5. The arithmetic method involved in finding the number of meters in 1 centimeter is equivalent to the methods used in finding each of the following except what?
Transcript
- 00:03
Here’s an unshmoopy question to put you nearly to sleep…
- 00:06
The arithmetic method involved in finding the number of meters in 1 centimeter is equivalent
- 00:11
to the methods used in finding each of the following EXCEPT… what?
- 00:15
Here are the potential answers...
- 00:21
So… what is this question asking?
Full Transcript
- 00:23
Really it’s just a general overview of how we solve word problems.
- 00:27
The key thing we have to glean here is size…
- 00:30
that we are going from large to small in all of the answers…
- 00:37
…except this on. B, which is going to be small to large.
- 00:41
And really… that’s all there is to it.
- 00:43
No foolproof way to approach a problem like this… you just have to call upon your reasoning
- 00:47
ability and a dash of common sense… and think.
- 00:51
Good call, Alice.
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Indirect proofs (or proofs by contradiction) prove their conclusion by showing that the opposite cannot be true. You can use this in math and in ar...
Formal proofs present the oh-so-mathematical evidence in two columns: one for the statement they are claiming is true, and the other for the reason...