Question

Find (f • g) (0) when f(x) = 4x + 7 and g(x) = 1/x.

Answer 1

SOLUTION:

Step 1:

In this question, we are given the following:

Step 2:

The details of the solution are as follows:

$\begin{gathered} Given\text{ that:} \\ (f\text{ o g \rparen \lparen x \rparen = f\lparen g\lparen x\rparen\rparen} \\ But\text{ g\lparen x\rparen = }\frac{1}{x} \\ Then,\text{ we have that:} \\ f(\frac{1}{x}) \\ But\text{ f\lparen x\rparen = 4 x + 7} \\ Then\text{ f\lparen}\frac{1}{x})\text{ = 4\lparen}\frac{1}{x})\text{ + 7}_ \\ This\text{ means that: } \end{gathered}$$\begin{gathered} (f\text{ o g\rparen \lparen x\rparen = f\lparen g\lparen x\rparen \rparen = f\lparen}\frac{1}{x})\text{ =4\lparen}\frac{1}{x}\text{ \rparen + 7} \\ Then,\text{ we have that:} \\ (f\text{ o g \rparen \lparen 0 \rparen = 4 \lparen}\frac{1}{0})\text{ + 7 = undefined \lparen OPTION A \rparen} \\ \end{gathered}$

CONCLUSION:

The final answer is:

$undefined\text{ \lparen OPTION A \rparen}$