- #1
epsilonzero
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Homework Statement
Consider ax''+bx'+cx=0 for b^2-4ac=0 with k= -b/(2a).
Show x=e^(kt) is a solution.
The Attempt at a Solution
x=e^(kt)
x'=(-b/2a)e^((-b/2a)t)
x''=(-b^2/4a^2)e^((-b/2a)t)
Then i plugged these into ax''+bx'+cx=0 and simplified to get e^((-b/2a)t)(-((b^2)/2)+c)=0
I'm stuck at what to do next.
Thank you for any help.