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[" Given: "f(x)=4x^(3)-6x^(2)cos2a+3x si...

[" Given: "f(x)=4x^(3)-6x^(2)cos2a+3x sin2a*sin6a+sqrt(ln(2a-a^(2)))" then "],[[" (A) "f(x)" is not defined at "x=1/2," (B) "f'(1/2)<0],[" (C) "f'(x)" is not defined at "x=1/2," (D) "f'(1/2)>0]]

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Given: f(x)=4x^(3)-6x^(2)cos2a+3x sin2a sin6a+sqrt(In(2a-a^(2))) then

Given: f(x)=4x^3 - 6x^2 cos 2 a + 3x sin 2 a sin 6 a+ sqrt (ln (2 a - a^2) then

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f(x)=x^(2)-2sqrt(sin*sqrt(3)-sin sqrt(2))x-(cos sqrt(3)-cos sqrt(2))

cos ^(2) 2x -cos ^(2) 6x = sin 4x sin 8x

cos ^(2) 2x -cos ^(2) 6x = sin 4x sin 8x

cos ^(2) 2x -cos ^(2) 6x = sin 4x sin 8x

cos ^(2) 2x -cos ^(2) 6x = sin 4x sin 8x

cos ^(2) 2x -cos ^(2) 6x = sin 4x sin 8x