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anilorap

  • 3 years ago

hola,,, question... can I use the rational root test to proof that the cubic root of 2 and square root 3 are irrationals?

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  1. satellite73
    • 3 years ago
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    sure if you consider the polynomial \[x^3-2\] the rational roots can only be \[\pm 1,\pm2\] and by inspection neither of those work.

  2. anilorap
    • 3 years ago
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    cool.. yea i did that... thanks satellite

  3. satellite73
    • 3 years ago
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    yw

  4. satellite73
    • 3 years ago
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    i guess if you want a real proof you have to know that the root exists, but that is clear because this is a continuous function that takes on both positive and negative values

  5. anilorap
    • 3 years ago
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    waitt

  6. anilorap
    • 3 years ago
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    they are really asking me prove in detail

  7. anilorap
    • 3 years ago
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    what u mean the root exist?

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