Comedk
Differentiation
COMEDK 2020
MCQ+1 / -02020
If \(y = {\cos ^2}{{3x} \over 2} - {\sin ^2}{{3x} \over 2}\), then \({{{d^2}y} \over {d{x^2}}}\) is
Comedk
COMEDK 2020
If \(y = {\cos ^2}{{3x} \over 2} - {\sin ^2}{{3x} \over 2}\), then \({{{d^2}y} \over {d{x^2}}}\) is