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bakonloverk

what is the multiplicative inverse?

  • one year ago
  • one year ago

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  1. tomo
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    http://www.youtube.com/watch?v=-eUfNBD4Kwc

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

    • one year ago
  3. Bri_Love
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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.

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

    • one year ago
  5. Geometrythebest
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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.

    • one year ago
  6. Bri_Love
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    7/5

    • one year ago
  7. bakonloverk
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    ohhhhhh ok thank u

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

    • one year ago
  9. bakonloverk
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    yea i do

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

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

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

    • one year ago
  13. bakonloverk
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    wait im confused

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

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

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

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

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

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

    • one year ago
  20. bakonloverk
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    -1

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

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

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

    • one year ago
  24. bakonloverk
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    wait 1?

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

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

    • one year ago
  27. skullpatrol
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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.

    • one year ago
  28. bakonloverk
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    wait it is 0

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

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

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

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

    • one year ago
  33. skullpatrol
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    No.

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

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

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

    • one year ago
  37. skullpatrol
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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?

    • one year ago
  38. bakonloverk
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    0.5

    • one year ago
  39. skullpatrol
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    Correct.

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

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

    • one year ago
  42. bakonloverk
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    1/0.5?

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

    • one year ago
  44. bakonloverk
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    2

    • one year ago
  45. skullpatrol
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    Correct.

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

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

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

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

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

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

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

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

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

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

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

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

    • one year ago
  58. bakonloverk
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    right?

    • one year ago
  59. skullpatrol
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    Yes.

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

    • one year ago
  61. skullpatrol
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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.

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

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

    • one year ago
  64. bakonloverk
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    nope

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

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

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

    • one year ago
  68. skullpatrol
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    Correct.

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

    • one year ago
  70. skullpatrol
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    np :)

    • one year ago
  71. bakonloverk
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    :)

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

    • one year ago
  73. bakonloverk
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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?

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

    • one year ago
  75. skullpatrol
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    Any ideas?

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

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

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

    • one year ago
  79. skullpatrol
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    Yes.

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

    • one year ago
  81. skullpatrol
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    Correct.

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

    • one year ago
  83. skullpatrol
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    Yes.

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

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

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

    • one year ago
  87. skullpatrol
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    Yes.

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

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

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

    • one year ago
  91. bakonloverk
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    ohhhhh kk thank u

    • one year ago
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