I WILL GIVE BRAINLY PLEASE HELP!! 1. Determine f -1 (x) for each of the given functions f (x) =2x-3 2. Determine

Question

I WILL GIVE BRAINLY PLEASE HELP!!

1. Determine f -1 (x) for each of the given functions
f (x) =2x-3

2. Determine f -1 (x) for each of the given functions
f (x) = x over x+2​​

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Tryphena 4 years 2021-09-05T06:02:11+00:00 1 Answers 10 views 0

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  1. MichaelMet
    0
    2021-09-05T06:03:55+00:00
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    Step-by-step explanation:

    1) f(x) =2x -3

    y=2x – 3

    x= 2y -3

    2y =x + 3

    y = x+3 over 2

    f(x)^-1 = x+3 over 2

    2) f(x) = x /x+2

    y= x / x+2

    y / y+2 = x

    y = (y+2)x

    y= xy +2x

    y -xy = 2x

    y( -x +1) = 2x

    y= 2x over -x + 1

    f(x)^1 = 2x over -x + 1

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )