From the course: Complete Guide to Differential Equations Foundations for Data Science
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Real and distinct roots
From the course: Complete Guide to Differential Equations Foundations for Data Science
Real and distinct roots
- [Speaker] Like I mentioned in the previous video, there are three types of roots you can gather from solving the characteristic equation. In this video, you'll focus on roots that are real and distinct. Let's first review what these are and how you obtain them. When solving a constant coefficient homogenous second order differential equation in the form of a multiplied by y double prime plus b multiplied by y prime plus c multiplied by y equal to zero, you can then use the characteristic equation of a multiplied by r squared plus b multiplied by r plus c equal to zero. You can then either factor or use the quadratic formula to solve for your roots with the quadratic formula being r equals negative b plus or minus the square root at b squared minus four, multiplied by a multiplied by c. Divide all that by two multiplied by a. In this case, if b squared minus four multiplied by a multiplied by c is greater than zero, then that means, you have two distinct real roots. If you don't want…
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Second order differential equations introduction5m 28s
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Calculating second order differential equations6m 52s
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Constant coefficient homogeneous second order equations7m 2s
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Real and distinct roots9m 54s
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Identical real roots10m 14s
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Complex roots12m 36s
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Superposition8m 31s
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Wronskian6m 4s
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Reduction of order13m 5s
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Nonhomogeneous second order equations5m 24s
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Undetermined coefficients12m 9s
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Variation of parameters12m 5s
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Second order differential equations applications7m 22s
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