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Graph of the function f(x) = Ax^2 - BX +...

Graph of the function `f(x) = Ax^2 - BX + C,` where `A=(sectheta -costheta ) (cosectheta - sin theta) (tan theta+ cottheta),B=(sintheta + cosec theta)^2+(cos theta + sec theta)^2- (tan^2 theta + cot^2theta)& C=12,` is represented by

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