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bronzegoddess

  • 3 years ago

find inverse: f(x)= (1/2)^x

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  1. bronzegoddess
    • 3 years ago
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    @hartnn @UnkleRhaukus this is what i have: x=2^-y but i don't know how i'll solve for y.

  2. hartnn
    • 3 years ago
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    take log on both sides

  3. bronzegoddess
    • 3 years ago
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    ok, i'll work out on paper and give answer

  4. bronzegoddess
    • 3 years ago
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    i got y= logx/-0,301

  5. hartnn
    • 3 years ago
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    it can be simplified as y= \(-\log_2x\) know how ?

  6. bronzegoddess
    • 3 years ago
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    yes wait: logx= -ylog2 logx/-log2= y y= −log2x because of the formula/rule logax= logx/loga and i know the proof thx!

  7. hartnn
    • 3 years ago
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    right, welcome ^_^

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