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How to integrate it? INT [1/ sqrt(3-t^2) ] dt?

INT [1/ sqrt(3-t^2) ] dt

=INT [1/{sqrt(3) * sqrt(1- (t^2)/3)} dt

=1/sqrt(3) INT [1/( sqrt(1- (t/3^(1/2))^2 ) ] dt

={1/sqrt(3)} arcsin (t/sqrt(3))

:(

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  • Anonymous
    1 decade ago
    Favorite Answer

    there's a rule INT [1/ sqrt(a^2 - x^2) dx = sin inverse (x/a) + C

    so a= sqrt 3 and x=t

    answer: sin inverse (t/sqrt 3) + C

  • 1 decade ago

    antiderivative formula for arcsin (arc means inverse sin^-1)

    ( au’ )

    (a√(a^2-u^2) ) = arcsin(u/a)

    ' means derivative

    the a's would reduce leaving the derivative of u which is 1 so the antiderivatie is t.

    a^2= 3 so a =sqrt3

    u^2=t^2 so u =t

    arcsin(t/√(3))

    Source(s): AP Calculus Class I am taking
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