Substituting the exponential trial solution into the homogeneous equation (Q1662)
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| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Substituting the exponential trial solution into the homogeneous equation |
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Statements
y=e^{rx},\\quad y'=r\\,e^{rx},\\quad y''=r^{2}\\,e^{rx};\\qquad y''+a\\,y'+b\\,y=\\bigl(r^{2}+a\\,r+b\\bigr)e^{rx}=0\\ \\Rightarrow\\ r^{2}+a\\,r+b=0,\\quad e^{rx}\\neq 0
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