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  • 3 years ago

What does it mean by restriced values in wolfram alpha? http://www.wolframalpha.com/input/?i=integrate+1%2F%2810-v%2F5%29

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  1. apple_pi
    • 3 years ago
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    where?

  2. Calculator
    • 3 years ago
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    Click the show steps then you'll see it

  3. lgbasallote
    • 3 years ago
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    im guessing it would be the value of v that would make the denominator equal to 0

  4. lgbasallote
    • 3 years ago
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    you cant have a denominator of zero right?

  5. Calculator
    • 3 years ago
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    That's weird because even the solution here http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20%289709%29/9709_w11_ms_51.pdf ended up \[-5 \log (v-50)+c\] but not \[-5 \log \left(10-\frac{v}{5}\right)+c\]

  6. lgbasallote
    • 3 years ago
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    hmmm wolfram does a lot of funny business =_=

  7. apple_pi
    • 3 years ago
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    um, v cannot equal 50. try evaluating your original expression with v = 50.

  8. Calculator
    • 3 years ago
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    v can be 50, ln(0)=1

  9. lgbasallote
    • 3 years ago
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    ln (1) = 0

  10. lgbasallote
    • 3 years ago
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    ln (0) = infinity

  11. lgbasallote
    • 3 years ago
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    ln e = 1

  12. apple_pi
    • 3 years ago
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    even your original function: 1/(10-v/5) what do you get when v = 50?

  13. apple_pi
    • 3 years ago
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    http://www.wolframalpha.com/input/?i=1%2F%2810-v%2F5%29 Look what would the integral be at v = 50? v = 50 is a vertical asymptote.

  14. UnkleRhaukus
    • 3 years ago
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    how did you get ln (0) is infinity at @lgbasallote ?

  15. lgbasallote
    • 3 years ago
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    hmm read the post lol...i didnt get ln (0) i was explaining that ln (0) is not 1

  16. UnkleRhaukus
    • 3 years ago
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    ln (0) is not infinity either

  17. lgbasallote
    • 3 years ago
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    well...close enough

  18. UnkleRhaukus
    • 3 years ago
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    |dw:1344507971374:dw|

  19. lgbasallote
    • 3 years ago
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    depends if 0+ or 0-...but i just generalized as infinity =))

  20. lgbasallote
    • 3 years ago
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    my point was it's not 1 =_=

  21. UnkleRhaukus
    • 3 years ago
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    infinity is not close enough to negative infinity

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