1.

The complete solution of the linear differential equation\(\frac{{{d^2}z}}{{d{t^2}}} + \left( {p + q} \right)\frac{{dz}}{{dt}} + pqz = 0\)

A. c1 e-pt + c2 e-qt
B. c1 ept - c2 eqt
C. c1 e-pt + c2 eqt
D. c1 ept + c2 eqt
Answer» B. c1 ept - c2 eqt


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