Consider the DE y ′′′
−2y ′′
−8y ′
=0 A) Verify that y 1
​
=7,y 2
​
=e −2x
and y 3
​
=e 4x
are solutions of the given DE. B) Show that y 1
​
,y 2
​
and y 3
​
form a fundamental set of solutions of the DE on (−[infinity],[infinity]). Write the general solution.