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superfly903
17.12.2019 •
Mathematics
Which description compares the vertical asymptotes of function a and function b correctly?
function a- f(x) = 1/x-1
function b
a. function a has a vertical asymptote at x =1
function b has a vertical asymptote at x =0
b. function a has a vertical asymptote at x = 1
function b has a vertical asymptote at x = -3
c. function a has a vertical asymptote at x = -1
function b has a vertical asymptote at x= -3
d. both functions have the same vertical asymptote.
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Ответ:
Option B:
Function A has a vertical asymptote at x = 1
Function B has a vertical asymptote at x = -3
Step-by-step explanation:
A function f(x) has a vertical asymptote if:
This means that if there is a value k for which f(x) has infinity or a -infinity then x = k is a vertical asymptote of f(x). Therefore, the closer x to k approaches, the closer the function becomes to infinity.
We can calculate the asymptote for function A.
Then, function A has a vertical asymptote at x = 1.
The asymptote of function B can be easily observed in the graph. Note that the function b is not defined for x = -3 and when x is closest to -3, f(x) approaches infinity.
Therefore x = -3 is asintota of function B.
Therefore the correct answer is option B.
Ответ:
D
Step-by-step explanation:
I plugged each equation into a graphing calculator and compared them to see which one matched the one in the picture.