- #1

- 9

- 0

Let ƒ(x) = (x

^{2}- x - 42) / x-7

find as x → 7.

Now I approach x from both sides and it get me 2 different answer.

So which one is correct:

13 or 14?

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter Hardikph
- Start date

- #1

- 9

- 0

Let ƒ(x) = (x

find as x → 7.

Now I approach x from both sides and it get me 2 different answer.

So which one is correct:

13 or 14?

- #2

- 35,918

- 6,644

Please post your working.View attachment 102575 I was doin' some coursera quiz. It asked this question :

Let ƒ(x) = (x^{2}- x - 42) / x-7

find as x → 7.

Now I approach x from both sides and it get me 2 different answer.

So which one is correct:

13 or 14?

- #3

SteamKing

Staff Emeritus

Science Advisor

Homework Helper

- 12,796

- 1,669

Also, please try to post your HW threads in the appropriate HW forum by topic.

- #4

symbolipoint

Homework Helper

Education Advisor

Gold Member

- 6,141

- 1,173

- #5

- 9

- 0

OK get It.

- #6

Ray Vickson

Science Advisor

Homework Helper

Dearly Missed

- 10,706

- 1,728

View attachment 102575 I was doin' some coursera quiz. It asked this question :

Let ƒ(x) = (x^{2}- x - 42) / x-7

find as x → 7.

Now I approach x from both sides and it get me 2 different answer.

So which one is correct:

13 or 14?

The function is not ##f(x) = \frac{x^2-x-42}{x} -7##, as you wrote.

- #7

- 9

- 0

Yes it must be like ƒ(x) = (x2 - x - 42) / (x-7).The function is not ##f(x) = \frac{x^2-x-42}{x} -7##, as you wrote.

Share: