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Yahoo! Group Title

The number of real roots of eq 3x^5 + 10x^3 + 30x + 7 =0 ?

  • one year ago
  • one year ago

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  1. Yahoo! Group Title
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    @mukushla @experimentX @Ishaan94

    • one year ago
  2. alanli123 Group Title
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    Solve it bro

    • one year ago
  3. Yahoo! Group Title
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    Any clue @alanli123

    • one year ago
  4. alanli123 Group Title
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    Or graph it?

    • one year ago
  5. alanli123 Group Title
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    then look at x intercepts?

    • one year ago
  6. Yahoo! Group Title
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    i wabt to solve this manually not by graph

    • one year ago
  7. alanli123 Group Title
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    Ok use the rational roots theorem and plug in possible root values

    • one year ago
  8. Yahoo! Group Title
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    wat is that

    • one year ago
  9. alanli123 Group Title
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    bro how old are u

    • one year ago
  10. Ishaan94 Group Title
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    my guess is only one. and that one root should be negative.

    • one year ago
  11. Ishaan94 Group Title
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    i used descartes rule of signs.

    • one year ago
  12. Yahoo! Group Title
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    hw u guys are using that rule can u teach me that @Ishaan94

    • one year ago
  13. Yahoo! Group Title
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    i think that method is very easy!

    • one year ago
  14. Ishaan94 Group Title
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    i can link you, http://mathworld.wolfram.com/DescartesSignRule.html. yes it's quite easy.

    • one year ago
  15. Yahoo! Group Title
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    it says file not found @Ishaan94

    • one year ago
  16. Yahoo! Group Title
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    nop i got it

    • one year ago
  17. Ishaan94 Group Title
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    haha really? try again, http://mathworld.wolfram.com/DescartesSignRule.html

    • one year ago
  18. Yahoo! Group Title
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    @Ishaan94 that helps a lot.....i am happy that i learnt new concept ....thxx

    • one year ago
  19. Yahoo! Group Title
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    since there is no change of sign it does not have any + ve roots

    • one year ago
  20. Yahoo! Group Title
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    is that correct

    • one year ago
  21. Ishaan94 Group Title
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    yes

    • one year ago
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