## DLS 2 years ago The extremeties of the latus rectum of the parabola x^2+8y=0 are?

1. DLS

@hartnn

2. DLS

|dw:1359552834648:dw| smt like this?

3. DLS

|dw:1359552864765:dw|

4. DLS

@sirm3d @experimentX @ujjwal

5. DLS

|dw:1359556893096:dw| A clear diagram perhaps,am i right?

6. DLS

And general equation would be $\LARGE x^2=-4ay$

7. DLS

$\LARGE x^2=-12y$

8. DLS

not sure what im doing :/

9. experimentX

find the focus first.

10. DLS

why locus?

11. experimentX

not locus ... focus.

12. DLS

oh sorry lol

13. DLS

focus is given (0,3) o.O

14. DLS

u drew it wrong..

15. experimentX

looks like here are couple of examples!! http://www.math-prof.com/Alg2/Alg2_Ch_40.asp

16. DLS

wth i was looking at the wrong Q sorry @experimentX @sirm3d ! i drew the wrong diagram from my attempts page XD

17. sirm3d

|dw:1359557441779:dw|

18. DLS

yeah,a=2

19. DLS

4,-4?

20. sirm3d

(-4,-2) and (4,-2)

21. sirm3d

|dw:1359557672691:dw|

22. DLS

i was telling just the x cods

23. DLS

yea

24. sirm3d

then you are right. the x-coord are $$\pm 4$$

25. DLS

thanks!!

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