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anonymous

  • 5 years ago

Inverse of Log base 4 of x

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  1. anonymous
    • 5 years ago
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    y=4^x\[f(x)=4^x\] ?

  2. anonymous
    • 5 years ago
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    Yes Perto! xD

  3. anonymous
    • 5 years ago
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    *gasp i was thinking that! well there's one i got right on the test..

  4. anonymous
    • 5 years ago
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    Now, try this one! Log base 2 of x + 3

  5. anonymous
    • 5 years ago
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    the inverse of that?

  6. anonymous
    • 5 years ago
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    yesh!

  7. anonymous
    • 5 years ago
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    f(x)= 2^(x+3)

  8. anonymous
    • 5 years ago
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    ?

  9. anonymous
    • 5 years ago
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    Nope!

  10. anonymous
    • 5 years ago
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    D:

  11. anonymous
    • 5 years ago
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    f(x)= 2^x ?

  12. anonymous
    • 5 years ago
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    wait a sec!

  13. anonymous
    • 5 years ago
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    wait lemme see!

  14. anonymous
    • 5 years ago
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    where's hanh?

  15. anonymous
    • 5 years ago
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    The answer is y = 2^x - 3

  16. anonymous
    • 5 years ago
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    why minus?

  17. anonymous
    • 5 years ago
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    can you show me how you did that

  18. anonymous
    • 5 years ago
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    cuz its the inverse

  19. anonymous
    • 5 years ago
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    darn..that means i probably got that wrong in the test. :\

  20. anonymous
    • 5 years ago
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    Okie! So it's: y = Log base e of x + 3, NOT (x+3) So it's 2^y = x + 3 There fore, 2^x - 3 = y

  21. anonymous
    • 5 years ago
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    id remember if i got that right

  22. anonymous
    • 5 years ago
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    base 2*

  23. anonymous
    • 5 years ago
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    next problem

  24. anonymous
    • 5 years ago
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    Log base x of 3x

  25. anonymous
    • 5 years ago
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    thats wierd

  26. anonymous
    • 5 years ago
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    x ^ y = 3x Inverse = x^x = 3y, so it's y = (x^x) / 3

  27. anonymous
    • 5 years ago
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    thats wierd

  28. anonymous
    • 5 years ago
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    okay, I'll change base x to base 2

  29. anonymous
    • 5 years ago
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    why?

  30. anonymous
    • 5 years ago
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    so that you won't be confuse with which x to switch

  31. anonymous
    • 5 years ago
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    2^y or x^y in the original = 3x Inverse = 2^x original x^x = 3y so divide both side by 3 to get y y = (2^x)/3 or (x^x)/3 in the original

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