Q4 Using graphical block diagram reduction, find the transfer function Y₁/R2 for the multi-input, multi-output (MIMO) system in Figure 6. Note: you can set R₁(s) = 0 in the block diagram when performing your block diagram reduction. R₁(s) G₁(s) R₂(s) G4(s) H₁(s) G₂(s) G₁(s) Y₁(s) +1 G7(s) Gg(5) Go(s) G5(s) H₂(s) Figure 6: A MIMO system G6(s) Y₂(s)