anonymous
  • anonymous
can someone help me find an equation for the inverse of the function. f(x)=2x - 3^x/4
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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IrishBoy123
  • IrishBoy123
lmLtfy :p \(\large f(x)=2x - \frac{3^x}{4}\) ??
anonymous
  • anonymous
Yes that's it
IrishBoy123
  • IrishBoy123
i don't think you can do it because as soon as you try to get that x out of the exponential, you lock the other x in a log do you know if there is an answer and what that answer is? if so i can try to hack it or you can bump and wait for someone else to come along to complicate matters, the other thing is this fails the so-called Horizontal Line Test - there is a local maximum, as you can see from the attached, so for f(x), 2 x's can map to the same y; but the inverse would require the opposite, ie that 1 y maps to 2 x's so there is no function so that you would need to restrict the domain to the LHS or RHS of the turning point .... not that helpful, i know :p
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anonymous
  • anonymous
Wel the the multiple choice answers provided for this question are: A. f^-1(x)=3x-2 B. f^-1(x)=- 3/4x+2 C. f^-11(x)=4/5x D. f^-1(x)=4/5x+3/4 I'm just not sure of the answer.
IrishBoy123
  • IrishBoy123
none of these give you an inverse to what you posted maybe you should post the actual question or a screenshot. i think that could help greatly.
anonymous
  • anonymous
https://mail.google.com/mail/u/0/s/?view=att&th=14f09cf704c0188d&attid=0.1&disp=attd&safe=1&zw
IrishBoy123
  • IrishBoy123
that is think is "your" gmail account ! just a picture, a screen grab , might be really informative, thx.

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