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[" 1) of "k" is "],[qquad [" 64.If "x in...

[" 1) of "k" is "],[qquad [" 64.If "x in(pi,(3 pi)/(2))," then "4cos^(2)((pi)/(4)-(x)/(2))+sqrt(4sin^(4))],[" is always equal to "]]

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