What is the simplified form of the following expression?

Ответ:

dasiaflowers85

02.01.2021

The inverse of a linear function is always a linear function

The values of a, b, c and d could be 2, 3, 1 and 6

The functions are given as:

$\mathbf{f(x) = x + ab}$

$\mathbf{g(x) = cx - d}$

Assume that a = 2, and b = 3.

So, function f(x) becomes

$\mathbf{f(x) = x + 2 \times 3}$

$\mathbf{f(x) = x + 6}$

Represent f(x) with y

$\mathbf{y = x + 6}$

Swap the positions of x and y

$\mathbf{x = y + 6}$

Make y the subject

$\mathbf{y = x - 6}$

Express y as an inverse function

$\mathbf{f^{-1}(x) = x - 6}$

From the question, we understand that g(x) is an inverse function of f(x).

So, the function g(x) becomes

$\mathbf{g(x) = x - 6}$

By comparing $\mathbf{g(x) = x - 6}$ and $\mathbf{g(x) = cx - d}$

$\mathbf{c = 1}$ and $\mathbf{d = 6}$

Hence, the values of a, b, c and d could be 2, 3, 1 and 6

Read more about functions and inverses at:

link

0,0(0 оценок)