Photo AI

Given: $$f(x) = \frac{3}{x - 1} - 2$$ 3.1 Write down the equation of the: 3.1.1 horizontal asymptote of $f$ - NSC Mathematics - Question 3 - 2016 - Paper 1

Question icon

Question 3

Given:--$$f(x)-=-\frac{3}{x---1}---2$$--3.1-Write-down-the-equation-of-the:--3.1.1-horizontal-asymptote-of-$f$-NSC Mathematics-Question 3-2016-Paper 1.png

Given: $$f(x) = \frac{3}{x - 1} - 2$$ 3.1 Write down the equation of the: 3.1.1 horizontal asymptote of $f$. 3.1.2 vertical asymptote of $f$. 3.2 Determine the ... show full transcript

Worked Solution & Example Answer:Given: $$f(x) = \frac{3}{x - 1} - 2$$ 3.1 Write down the equation of the: 3.1.1 horizontal asymptote of $f$ - NSC Mathematics - Question 3 - 2016 - Paper 1

Step 1

Write down the equation of the horizontal asymptote of $f$.

96%

114 rated

Answer

To find the horizontal asymptote, we look at the behavior of f(x)f(x) as xx approaches infinity or negative infinity. As xx \to \infty, we can simplify the function:

f(x)3x22f(x) \approx \frac{3}{x} - 2 \to -2

Thus, the equation of the horizontal asymptote is:

y=2y = -2

Step 2

Write down the equation of the vertical asymptote of $f$.

99%

104 rated

Answer

The vertical asymptote occurs where the denominator is zero. Setting the denominator x1=0x - 1 = 0, we find:

x1=0x=1x - 1 = 0 \Rightarrow x = 1

Thus, the equation of the vertical asymptote is:

x=1x = 1

Step 3

Determine the $x$- and $y$-intercepts of $f$.

96%

101 rated

Answer

To find the xx-intercept, we set f(x)=0f(x) = 0:

3x12=03x1=23=2(x1)3=2x22x=5x=52\frac{3}{x - 1} - 2 = 0 \Rightarrow \frac{3}{x - 1} = 2 \Rightarrow 3 = 2(x - 1) \Rightarrow 3 = 2x - 2 \Rightarrow 2x = 5 \Rightarrow x = \frac{5}{2}

Thus, the xx-intercept is $

\left( \frac{5}{2}, 0 \right)$.

To find the yy-intercept, we evaluate f(0)f(0):

f(0)=3012=32=5f(0) = \frac{3}{0 - 1} - 2 = -3 - 2 = -5

Thus, the yy-intercept is (0,5)(0, -5).

Step 4

Sketch the graph of $f$, showing clearly the asymptotes and the intercepts with the axes.

98%

120 rated

Answer

To sketch the graph of f(x)f(x), we will plot the horizontal asymptote y=2y = -2 and the vertical asymptote x=1x = 1. The xx-intercept is at (52,0)(\frac{5}{2}, 0), and the yy-intercept is at (0,5)(0, -5). The function approaches y=2y = -2 as xx \to \infty and xx \to -\infty, and the graph will exhibit a hyperbolic shape arising from the asymptotes.

Step 5

Determine the coordinates of the point of intersection of the asymptotes of $g$.

97%

117 rated

Answer

g(x)=f(x3)+7g(x) = f(x - 3) + 7 implies that the vertical asymptote of gg is shifted to x=4x = 4 (since 1+3=41 + 3 = 4). The horizontal asymptote is lifted to y=5y = 5 (since 2+7=5-2 + 7 = 5). Thus, the coordinates of the intersection of the asymptotes are:

(4,5)(4, 5).

Join the NSC students using SimpleStudy...

97% of Students

Report Improved Results

98% of Students

Recommend to friends

100,000+

Students Supported

1 Million+

Questions answered

;