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smurfy14

  • 5 years ago

Can you check my answers? File attached (only 9 problems)

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  1. smurfy14
    • 5 years ago
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  2. anonymous
    • 5 years ago
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    checking now... 37 38 right

  3. anonymous
    • 5 years ago
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    38 39 are right

  4. anonymous
    • 5 years ago
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    first one is wrong

  5. anonymous
    • 5 years ago
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    37 is not right lol

  6. anonymous
    • 5 years ago
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    41 is wrong

  7. anonymous
    • 5 years ago
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    fail... 3+2 = 5

  8. anonymous
    • 5 years ago
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    ^for 37

  9. anonymous
    • 5 years ago
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    the last question is actually very easy

  10. smurfy14
    • 5 years ago
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    ok sorry i multiplied for some reason :P

  11. smurfy14
    • 5 years ago
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    41?

  12. anonymous
    • 5 years ago
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    answer to 45 is just "3"

  13. smurfy14
    • 5 years ago
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    nvm i know how to do 41 and how did u get 3?

  14. anonymous
    • 5 years ago
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    g(x) = -2f(x-1) + 5 , this given

  15. anonymous
    • 5 years ago
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    now , g(3) , just means go the function and g , and everywhere you see an x , replace it with a 3

  16. anonymous
    • 5 years ago
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    ie , g(3) = -2 f(3-1) + 5 // by subbing int the above

  17. anonymous
    • 5 years ago
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    g(3) = -2f(2) + 5

  18. anonymous
    • 5 years ago
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    but we were told f(2) = 1

  19. anonymous
    • 5 years ago
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    the answer for 45 is 3

  20. anonymous
    • 5 years ago
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    g(3) = -2 +5 = 3

  21. smurfy14
    • 5 years ago
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    ok i see thanks! so is everything else besades 41 correct?

  22. anonymous
    • 5 years ago
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    lol I was too slow elecengineer (and I'm assuming that you're in electrical engineering.. which I am too haha)

  23. anonymous
    • 5 years ago
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    no, 37 is wrong

  24. smurfy14
    • 5 years ago
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    well ya besides that?

  25. anonymous
    • 5 years ago
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    37 should be +5

  26. smurfy14
    • 5 years ago
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    how do you do 42?

  27. anonymous
    • 5 years ago
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    confirmed 44 righttttt

  28. anonymous
    • 5 years ago
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    42 is inverse just switch the y and x around lemme see

  29. anonymous
    • 5 years ago
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    so you have y=x+3 make it so that it is x=y+3

  30. anonymous
    • 5 years ago
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    then you'll have y=x-3 where y=h^(-1)x

  31. smurfy14
    • 5 years ago
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    so whats the answer?

  32. anonymous
    • 5 years ago
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    x-3

  33. anonymous
    • 5 years ago
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    lol

  34. smurfy14
    • 5 years ago
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    oh ok and is the answer to 41 7x^3+36x^2+54x+28?

  35. smurfy14
    • 5 years ago
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    hello?

  36. anonymous
    • 5 years ago
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    37. h(2+a) = (2+a)+3 = 5+a 38. correct 39. correct 40. correct\[41.f(x+h)-f(x) = [(x+h)^{3}+1]-(x ^{3}+1)\]\[=x ^{3}+h ^{3}+3x ^{2}h+3xh ^{2}+1-x ^{3}-1\]\[=h ^{3}+3x ^{2}h+3xh ^{2}\] \[42. h ^{-1}(x)=1/(x+3)\] \[43. f(x)*g(x) = (x ^{3}+1)(x ^{2}-2)\]\[=x ^{5}-2x ^{3}+x ^{2}-2\] 44. correct 45. g(x) = -2f(x-1)+5 g(3) = -2f(3-1)+5 = -2f(2)+5 = -2*1+5 f(2)=1 = -2+5 = 3

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