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anonymous

  • 5 years ago

Multiple Choice: An equation for a tangent to the graph of y=archsin (x/2) at the origin is (a) x-2y=0 (b) x-y=0 (c) x=0 (d) y=0 (e) pix-2y=0

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  1. anonymous
    • 5 years ago
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    just arcsin* btw.. hehe

  2. anonymous
    • 5 years ago
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    find the derivative then substitute 0,0

  3. anonymous
    • 5 years ago
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    derivative of arcsin is 1/(sqrt 1-x^2) btw..

  4. amistre64
    • 5 years ago
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    y = sinh^-1 y' = e^-x - e^...../2........ something..... I know the other ones :)

  5. amistre64
    • 5 years ago
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    oh...that "h" threw me. y' = 1/sqrt(1-x^2)

  6. anonymous
    • 5 years ago
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    lol !

  7. anonymous
    • 5 years ago
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    thats why i corrected him at top :P

  8. amistre64
    • 5 years ago
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    the equation to the tangent has the derivative as the slope.... 0 = f'(x)x + b

  9. amistre64
    • 5 years ago
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    yeah ;)

  10. amistre64
    • 5 years ago
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    "y=archsin (x/2) at the origin" ack!!..... it helps to read the whole thing, I get lazy and start making up my own question lol

  11. amistre64
    • 5 years ago
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    at 0,0 you get a slope of 1, so the equation of the tangent is: y = x and thats my final offer

  12. anonymous
    • 5 years ago
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    lmao! i hope u put 0,0 in the derivative!

  13. amistre64
    • 5 years ago
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    :) I think I miss placed a Dx tho.... since its got that x/2 in there ;)

  14. anonymous
    • 5 years ago
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    \[1/ (\sqrt{2-x} \sqrt{x+2}\]

  15. amistre64
    • 5 years ago
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    \[y' = \frac{Dx}{\sqrt{1-\frac{x}{2}^2}} \rightarrow Dx = \frac{1}{2}\]

  16. anonymous
    • 5 years ago
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    thats the derivative....forgot to close bracket lol

  17. anonymous
    • 5 years ago
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    I DID IT DIFF! :P

  18. amistre64
    • 5 years ago
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    I wanna change my vote :) y = x/2 ;) but I probably missed that one too

  19. anonymous
    • 5 years ago
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    lol! ha this is bad... i dont like this question!

  20. amistre64
    • 5 years ago
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    ack!! how can a fraction = 0 if its got a constant up top....

  21. anonymous
    • 5 years ago
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    yo this is messed...

  22. anonymous
    • 5 years ago
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    cuz the derivative of that equation will be the equation of the tangent slope...it cant be ny of those options :S...

  23. amistre64
    • 5 years ago
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    take this question, throw it in a sack, burn it in the fireplace, kill a chicken and spread its blood around the place to ward off any evil spirits that might rise from the ashes... ;)

  24. amistre64
    • 5 years ago
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    come to think of it, when does sin^-1 have a hump in it?

  25. anonymous
    • 5 years ago
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    lmao!!!

  26. anonymous
    • 5 years ago
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    I thank you guys for all of the help! I can't exactly figure it out myself. Tricky tricky. tisk tisk. :)

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