JEE Main 2025April, Unspecified (session-level dataset)MathematicsMediumLimit, Continuity and Differentiability420× since 2002If limx→0cos(2x)+acos(4x)−bx4\lim\limits_{x \to 0} \frac{\cos(2x) + a\cos(4x) - b}{x^4}x→0limx4cos(2x)+acos(4x)−b is finite, then (a+b)(a + b)(a+b) is equal to:AOption A. 12\frac{1}{2}21BOption B. 0COption C. 34\frac{3}{4}43DOption D. −1-1−1CheckSkip · show solution
