Q.The range of $f(x)=\cos x \cdot \cos(\pi + x) \cdot \cos(\pi - x)$ is

[-1/4, 1/4]

[-1/8, 1/8]

[-1/2, 1/2]

[0, 1/4]

The correct solution involves applying the fundamental concept to derive the final value step by step...

Already a member? Login here

Q.The range of f(x)=cos⁡x⋅cos⁡(π+x)⋅cos⁡(π−x)f(x)=\cos x \cdot \cos(\pi + x) \cdot \cos(\pi - x)f(x)=cosx⋅cos(π+x)⋅cos(π−x) is