Discussion
Subsidiary equation is solved by purely algebraic manipulations in
Answer: B
Solving a differential equation by Laplace transform runs in three steps:
- Transform the equation into an algebraic subsidiary equation in \( s \)
- Solve that subsidiary equation by algebra alone
- Take the inverse transform to recover the solution in \( t \)
Step 2 is where the method pays off: no calculus is needed, only ordinary algebraic manipulation.
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