## 9 2 years ago fin the critical point for this function :::::

1. ksaimouli

?

2. 9

$f(x)=\frac{ x }{ x ^{2} + 1}$

3. 9

i did tried to solve it , but i on;y came up with one critical point which is -1 is my answer right ?

4. ksaimouli

what did u get for derivative

5. 9

i got $\frac{ 1 }{ x ^{2} + 1 }$

6. 9

o_o'

7. ksaimouli

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8. ksaimouli

9. ksaimouli

ur derivative is wrong (i think)

10. ksaimouli

use quotient rule

11. ksaimouli

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12. 9

ohh i see .. thanks

13. ksaimouli

yup