Determine if the solutions e −3x
,e −3x
,e −2x
to the DE y ′′′
+8y ′′
+21y ′
+18y=0 are linearly independent using the Wronskian and Theorem 3. The Wronskinan funciton in this case is: Wr(x)= Using Theroem 3, this means that the soluitons are A. linearly independent B. linearly dependent