I ONLY NEED NUMBER 2 AND 4 Find the value(s) of k that makes each of…

I ONLY NEED NUMBER 2 AND 4

Find the value(s) of k that makes each of the following systems stable. 1. 40) + 2 ky()= x(e) 2. 3 ay 19 – ku(t)=141) 3. dip yen + zky(i)= x(0) 4 ay 049 + x96) = x(6) 5. Op yen) + z(x + 1) x 061) = x(1)