The graph of the function cos x cos (x + 2) – cos 2 (x + 1) is

Mathematics · JEE Advanced · NTA Exams — Co-ordinate Geometry

1. a straight line passing through (0, –sin²1) with slope 2
2. a straight line passing through (0, 0)
3. a parabola with vertex (1, –sin² 1)
4. a straight line passing through the point \(\left(\frac{\pi}{2},-\sin ^{2} 1\right)\) and parallel to the x-axis.

Answer

(D) a straight line passing through the point ( 2 ,- ^ 2 1 ) and parallel to the x-axis.

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