Repeated and complex roots
A zero discriminant gives $(c_1 + c_2x)e^{rx}$ and a negative one gives a decaying oscillation; both come from the same substitution.
About 40 minutes8 activities Paper packet
A zero discriminant gives $(c_1 + c_2x)e^{rx}$ and a negative one gives a decaying oscillation; both come from the same substitution.
About 40 minutes8 activities Paper packet