A real-valued discrete-time signal x[n] has a Fourier transform that is zero for 3π/14...

A real-valued discrete-time signal x[n] has a Fourier transform that is zero for 3π/14 ≤ |ω| ≤ π. The nonzero portion of the Fourier transform of o of can be made to occupy the region |ω| < π by first performing upsmapling, by a factor of L and then performing downsampling by a factor of M. Specify the values of L and M.