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Problem 1 Problem 2 Problem 3 Problem 4 Problem 5 Problem 6 Problem 7 Problem 8 Problem 9 Problem 10 Problem 11 Problem 12 Problem 13 Problem 14 Problem 15 Problem 16 Problem 17 Problem 18 Problem 19 Problem 20 Problem 21 Problem 22 Problem 23 Problem 24 Problem 25 Problem 26 Problem 27 Problem 28 Problem 29 Problem 30 Problem 31 Problem 32 Problem 33 Problem 34 Problem 35 Problem 36 Problem 37 Problem 38 Problem 39 Problem 40 Problem 41 Problem 42 Problem 43 Problem 44 Problem 45 Problem 46 Problem 47 Problem 48 Problem 49 Problem 50 Problem 51 Problem 52 Problem 53 Problem 54 Problem 55 Problem 56 Problem 57 Problem 58 Problem 59 Problem 60 Problem 61 Problem 62 Problem 63 Problem 64 Problem 65 Problem 66 Problem 67 Problem 68 Problem 69 Problem 70 Problem 71 Problem 72 Problem 73 Problem 74 Problem 75 Problem 76 Problem 77 Problem 78 Problem 79 Problem 80 Problem 81 Problem 82 Problem 83 Problem 84 Problem 85 Problem 86 Problem 87 Problem 88 Problem 89 Problem 90 Problem 91 Problem 92 Problem 93 Problem 94 Problem 95 Problem 96 Problem 97 Problem 98 Problem 99 Problem 100 Problem 101 Problem 102 Problem 103 Problem 104 Problem 105

Problem 95 Easy Difficulty

Inverse Functions
$$\begin{array}{l}{\text { (a) Find the inverse of the function } f(x)=\frac{2^{x}}{1+2^{x}}} \\ {\text { (b) What is the domain of the inverse function? }}\end{array}$$

Answer

a. $f^{-1}(x)=\log _{2}\left(\frac{x}{1-x}\right)$
b. $D_{f^{-1}}=(0,1)$

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Problem 9
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Video Transcript

I say this question was giving the fashion off X. That's a Lexi coaster to two parts to that. So we need to find a no one of that. So inverse effect. So so depend. That region said that was why you chose to to to power to acts, then will you? Just then we English is so that means actually supposed to tutor part two. Why and when they're so awful. Why? But let's go ahead and do that. So in order to get get to why we need to take, uh, lockable sensor log ex accosted log two. Log on to a to y So that so that's gonna give us log of X because of two. Why log on to so log off X over. Log off too you go to Why so my why what you could chew log X over law Off to bed with 20 I can read. This is one over to log X space too. So this the amorous function There's one over two Log expects to

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