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[Core] 請教 scientific notation 問題

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請教 scientific notation 問題

convert 1997^(-98) into scientific notation

thx
   

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Motivation: Calculators can do powers of relatively small numbers, but definitely not as large as 1997.

Obviously you can't just plug the expression into your calculator - the calculator will give you 0.
The big hint is to first convert 1997 into scientific notation, then use indices rules to manipulate the expression.
You can check your answer with wolframalpha.

Also I'd suppose the question requires 3 sig. fig. accuracy?
Here's the solution: https://docdro.id/Ta3MPe1
Don't open the solution until you've given your best shot after the hint.

Good luck!

[ 本帖最後由 風之男 於 2020-10-5 06:43 AM 編輯 ]

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