Identify the errors made in finding the inverse of y = x2 + 12x x= y2 + 12x y2 = x -12 y2 = -11x y= V-11x, for

Question

Identify the errors made in finding the inverse of
y = x2 + 12x
x= y2 + 12x
y2 = x -12
y2 = -11x
y= V-11x, for x 20
Describe the three errors

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Thiên Di 4 years 2021-07-21T20:12:28+00:00 1 Answers 55 views 0

Answers ( )

  1. thaiduong
    0
    2021-07-21T20:14:15+00:00
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    Answer:

    x = y² + 12x

    y² = x – 12

    y² = -11x.

    Step-by-step explanation:

    We need to find the inverse of the given function , which is ,

    \rm\implies y = x^2 + 12x

    Step 1 : Interchange x and y :–

    \rm\implies x = y^2 + 12y

    But according to the steps given in the Question , in very first step in 12x , x is not replaced by y . After which , the steps go wrong in the question .

    The 3 errors :–

    • x = y² + 12x
    • y² = x – 12
    • y² = -11x.

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