18.sqrt(cos3x)

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sqrt(cos 3x)

y=cos^(-1)sqrt((cos3x)/(cos^(3)x)), thenshowthat (dy)/(dx)=sqrt((3)/(cos x cos3x))

If y=cos^(-1)sqrt((cos3x)/(cos^3x)),then show (dy)/(dx)=sqrt(3/(cosxcos3x))

If y=cos^(-1)sqrt((cos3x)/(cos^3x)),t h e ns howt h a t(dy)/(dx)=sqrt(3/(cosxcos3x))

If y= cos^(-1)sqrt((cos3x)/(cos^3x)) and (dy)/(dx)=sqrt((k)/(cos2x+cos4x))( sinx gt0) then k is

Derivatives of y = cos^(-1) sqrt((cos 3x)/(cos ^(3) x)) with respect to x , is

int(sqrt(cos3x))/(sin x sqrt(cos x))dx

If cos y=sqrt((cos 3x)/(cos^(3)x)) , prove that, (dy)/(dx)=sqrt(3 sec x sec 3x) .

prove that cot^(-1)[sqrt((1+cos3x)/(1-cos3x))]