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kittycat01

  • one year ago

tan^-1[(√x+√a)/(1-√(xa))] differentiate it plz m gtting 1/2(√x) which is not correct answer is 1/[2(√x)(1+x)]

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  1. hartnn
    • one year ago
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    same type of question with different substitution

  2. kittycat01
    • one year ago
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    hmm i think i did something wrong let me do it again

  3. kittycat01
    • one year ago
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    well u don't have to substitue :) @hartnn i think i forgot to differentiate tan^-1 (x)^1/2 i missed the tan^-1 part

  4. hartnn
    • one year ago
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    say, sqrt x= tan y sqrt a = tan alpha then , [(√x+√a)/(1-√(xa))] =... ?

  5. hartnn
    • one year ago
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    ohh..so now did u get it ?

  6. kittycat01
    • one year ago
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    u have to use tan^-1 x + tan^-1 y formula well not now

  7. kittycat01
    • one year ago
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    trying again

  8. kittycat01
    • one year ago
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    :'( not getting :'(

  9. kittycat01
    • one year ago
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    how to differnatiate tan^-1(x)^1/2

  10. hartnn
    • one year ago
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    use chain rule, know about it ?

  11. kittycat01
    • one year ago
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    no :'( that's the problem simple chain rule i know

  12. kittycat01
    • one year ago
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    like this one sin(cos3x) but never did for inverse trign.........

  13. kittycat01
    • one year ago
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    is the differenatition of tan^-1(x)^1/2 is

  14. kittycat01
    • one year ago
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    is =X =1/(1+(x^1/2)^2 . 1/2*(x)^-1/2 ????????

  15. hartnn
    • one year ago
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    ok, derivative of tan^{-1} x is 1/(1+x^2), right ?? for derivative of tan^{-1} sqrt(x) you do 1/(1+ [\sqrt x]^2) times deribative of sqrt x

  16. kittycat01
    • one year ago
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    yep

  17. kittycat01
    • one year ago
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    i think i have used chain rule -_- is that a chain rule @hartnn

  18. souvik
    • one year ago
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    you did it,,,kitty

  19. hartnn
    • one year ago
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    didn't you get the answer then ? yes, thats was chain rule only...

  20. kittycat01
    • one year ago
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    lol i know everything but still do silly things -_- @souvik

  21. souvik
    • one year ago
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    it happens some time...

  22. kittycat01
    • one year ago
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    @hartnn - chain rule :O so that's a chain rule

  23. hartnn
    • one year ago
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    because what you wrote matches with your final answer...

  24. kittycat01
    • one year ago
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    not some times everytime it happens

  25. souvik
    • one year ago
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    keep your head cool....like MSD

  26. kittycat01
    • one year ago
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    bcoz of calculation mistake i lost 3 marks in maths prob :'( i did everything correct but in final answer i made a error in multiplication

  27. kittycat01
    • one year ago
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    MSD??????

  28. kittycat01
    • one year ago
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    @hartnn -tahnx :)

  29. hartnn
    • one year ago
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    hey, welcome anytime ^_^

  30. kittycat01
    • one year ago
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    :)

  31. souvik
    • one year ago
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    Indian cricket team captain...

  32. kittycat01
    • one year ago
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    oh :OOO ms dhoni :OOO i don't like him lol

  33. souvik
    • one year ago
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    why?

  34. kittycat01
    • one year ago
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    reminds me of my frenemy :P

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