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bakonloverk

  • one year ago

what is the multiplicative inverse?

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  1. tomo
    • one year ago
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    http://www.youtube.com/watch?v=-eUfNBD4Kwc

  2. Geometrythebest
    • one year ago
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    are you asking for the definition?

  3. Bri_Love
    • one year ago
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    multiplicative inverse (mathematics) one of a pair of numbers whose product is 1: the reciprocal of 2/3 is 3/2; the multiplicative inverse of 7 is 1/7.

  4. bakonloverk
    • one year ago
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    ok wait wht is the multiplicative inverse of 5/7?

  5. Geometrythebest
    • one year ago
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    the inverse of a number means that if you multiply the number by its inverse you will get 1. so therefore, to work out the inverse you do 1 divided by the number.

  6. Bri_Love
    • one year ago
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    7/5

  7. bakonloverk
    • one year ago
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    ohhhhhh ok thank u

  8. skullpatrol
    • one year ago
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    Do you understand now?

  9. bakonloverk
    • one year ago
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    yea i do

  10. bakonloverk
    • one year ago
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    wait so would the inverse of -2 3/4 be 4/11?

  11. skullpatrol
    • one year ago
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    |dw:1360271797991:dw|

  12. skullpatrol
    • one year ago
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    |dw:1360271859211:dw|

  13. bakonloverk
    • one year ago
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    wait im confused

  14. bakonloverk
    • one year ago
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    wait wait wait never mind

  15. skullpatrol
    • one year ago
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    You are missing the minus sign.

  16. bakonloverk
    • one year ago
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    oh so its -4/11?

  17. skullpatrol
    • one year ago
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    Correct. What is the multiplicative inverse of -1?

  18. bakonloverk
    • one year ago
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    1/-1 right?

  19. skullpatrol
    • one year ago
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    What does that equal?

  20. bakonloverk
    • one year ago
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    -1

  21. skullpatrol
    • one year ago
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    Correct, excellent. how about the multiplicative inverse of 0?

  22. bakonloverk
    • one year ago
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    wouldnt tht just b 0?

  23. skullpatrol
    • one year ago
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    Are you sure? Think about it....

  24. bakonloverk
    • one year ago
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    wait 1?

  25. skullpatrol
    • one year ago
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    Please don't guess. Try to come up with a reasonable answer.

  26. bakonloverk
    • one year ago
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    well im not trying 2 guess

  27. skullpatrol
    • one year ago
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    I know, I know.... sorry but this is one of THE most difficult questions to understand for most students, I apologize.

  28. bakonloverk
    • one year ago
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    wait it is 0

  29. skullpatrol
    • one year ago
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    A multiplicative inverse is also called a "reciprocal" as is DEFINED as so, reciprocals: Two numbers whose product is 1.

  30. bakonloverk
    • one year ago
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    0/1 would b 1/0

  31. skullpatrol
    • one year ago
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    |dw:1360273959086:dw|

  32. bakonloverk
    • one year ago
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    ohhhh so the answer is 1?

  33. skullpatrol
    • one year ago
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    No.

  34. bakonloverk
    • one year ago
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    ugh then wht is it?

  35. skullpatrol
    • one year ago
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    The answer is "there is no answer"

  36. bakonloverk
    • one year ago
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    omg thts wht my calculator said

  37. skullpatrol
    • one year ago
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    Let me show you the DEFINING equation for reciprocals again: $$a*b=1$$ When asked to find the reciprocal of a number replace one of the letters in this equation with that number and solve for the other letter, for example: what is the reciprocal of 2? So $$2*b=1$$ What number multiplied by 2 gives 1?

  38. bakonloverk
    • one year ago
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    0.5

  39. skullpatrol
    • one year ago
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    Correct.

  40. bakonloverk
    • one year ago
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    YAY!!!! i finally understand something

  41. skullpatrol
    • one year ago
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    What is the reciprocal of 0.5?

  42. bakonloverk
    • one year ago
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    1/0.5?

  43. skullpatrol
    • one year ago
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    Yes!!! simplify that please. What number multiplied by 0.5 equals 1?

  44. bakonloverk
    • one year ago
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    2

  45. skullpatrol
    • one year ago
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    Correct.

  46. bakonloverk
    • one year ago
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    kk give me another one

  47. skullpatrol
    • one year ago
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    What is the reciprocal of 0?

  48. bakonloverk
    • one year ago
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    wait we just did this one

  49. skullpatrol
    • one year ago
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    Follow the steps I gave you above.

  50. bakonloverk
    • one year ago
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    0 * b = 1

  51. skullpatrol
    • one year ago
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    EXCELLENT!!! Now you are really learning :-D

  52. bakonloverk
    • one year ago
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    lol so then it would b 1/0?

  53. skullpatrol
    • one year ago
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    $$\frac{1}{0}$$ is not a number, because division by 0 is undefined.

  54. bakonloverk
    • one year ago
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    well yea but if we were using different numbers would it look almost like tht?

  55. skullpatrol
    • one year ago
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    Give me an example please.

  56. bakonloverk
    • one year ago
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    like in the problem im doing now hold on

  57. bakonloverk
    • one year ago
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    \[4\frac{ 1 }{ 8} would be \frac{ 8 }{ 33 } \]

  58. bakonloverk
    • one year ago
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    right?

  59. skullpatrol
    • one year ago
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    Yes.

  60. bakonloverk
    • one year ago
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    YAY!!!!

  61. skullpatrol
    • one year ago
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    Let me try and explain why you can never divide by 0. Dividing by 0 would mean multiplying by the reciprocal of 0, but 0 has no reciprocal because 0 times ANY number is 0, NOT 1.

  62. bakonloverk
    • one year ago
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    OMG tht makes soooo much sense now

  63. skullpatrol
    • one year ago
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    |dw:1360276164935:dw|

  64. bakonloverk
    • one year ago
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    nope

  65. skullpatrol
    • one year ago
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    So what is the answer to "what is the multiplicative inverse of 0?"

  66. skullpatrol
    • one year ago
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    |dw:1360276813364:dw|

  67. bakonloverk
    • one year ago
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    there is no answer u cant put any number there

  68. skullpatrol
    • one year ago
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    Correct.

  69. bakonloverk
    • one year ago
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    yay omg thank u so much

  70. skullpatrol
    • one year ago
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    np :)

  71. bakonloverk
    • one year ago
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    :)

  72. bakonloverk
    • one year ago
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    wait can u help me with another problem?

  73. bakonloverk
    • one year ago
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    the smallest owl found in the united states is the elf owl, which weighs 1 1/2 ounces. one of the largest owls is the Eurasian eagle owl which weighs nearly 10 pounds or 156 ounces. the Eurasian eagle owl is how many times as heavy as the elf owl?

  74. bakonloverk
    • one year ago
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    thts the problem^^^

  75. skullpatrol
    • one year ago
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    Any ideas?

  76. bakonloverk
    • one year ago
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    well idk how 2 set the problem up

  77. skullpatrol
    • one year ago
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    Decide what unknown number is asked for and what facts are known.

  78. bakonloverk
    • one year ago
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    do i have 2 convert 1 1/2 into an improper fraction?

  79. skullpatrol
    • one year ago
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    Yes.

  80. bakonloverk
    • one year ago
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    ok so thts 3/2

  81. skullpatrol
    • one year ago
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    Correct.

  82. bakonloverk
    • one year ago
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    then do i put 156 over 1?

  83. skullpatrol
    • one year ago
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    Yes.

  84. bakonloverk
    • one year ago
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    so would it b \[\frac{ 156 }{ 1 } - \frac{ 3 }{ 2 }\]

  85. skullpatrol
    • one year ago
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    |dw:1360277686583:dw|

  86. bakonloverk
    • one year ago
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    oh so its 156 divided by 3/2?

  87. skullpatrol
    • one year ago
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    Yes.

  88. bakonloverk
    • one year ago
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    so its 312/3

  89. bakonloverk
    • one year ago
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    so the answers 104 ounces?

  90. skullpatrol
    • one year ago
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    Not ounces, but how many times heavier.

  91. bakonloverk
    • one year ago
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    ohhhhh kk thank u

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