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International Baccalaureatte | Maths HL
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Masha
Masha

International Baccalaureatte chevron_right Maths HL

Determine all positive integer values...

Date Posted: 6 years ago
Views: 464

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Wen Guotai Daniel
Wen Guotai Daniel's answer
66 answers (Tutor Details)
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The only n value which satisfies is 3. No other values. The proof is by considering odd and even numbers; and there is no perfect square in between two neighboring perfect squares. Cheers.
Jiayang
Jiayang
6 years ago
You're missing an answer
Wen Guotai Daniel
Wen Guotai Daniel
6 years ago
Yah, missed the 36 being a perfect square. Thanks Jiayang. Yours is neater!
Wen Guotai Daniel
Wen Guotai Daniel
6 years ago
3 & 12 are the two values. Sorry!
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Jiayang
Jiayang's answer
1883 answers (Tutor Details)
Jiayang
Jiayang
6 years ago
Explanation for why other integers won't work comes from the factorisation of 49 into product of 2 integers. There're only 2 possibilities.