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2nd order homogeneous linear differential equations with constant coefficients | Math with Janine
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In this video tutorial, I demonstrate how to solve 2nd order homogeneous linear differential equations with constant coefficients. First, we need to write the auxiliary equation (aka the "characteristic equation"). After this, we can either factor or use the quadratic equation to solve for our roots. The nature of our roots determine the form of our general solution.
There are three possibilities:
Case 1: The discriminant (b^2-4ac) is less than zero ( real and distinct roots)
Case 2: The discriminant (b^2-4ac) is equal to zero (repeated real roots)
Case 3: The discriminant (b^2-4ac) is less than zero (conjugate complex roots)
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There are three possibilities:
Case 1: The discriminant (b^2-4ac) is less than zero ( real and distinct roots)
Case 2: The discriminant (b^2-4ac) is equal to zero (repeated real roots)
Case 3: The discriminant (b^2-4ac) is less than zero (conjugate complex roots)
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