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1. |
If the characteristic equation of the differential equation \(\frac{{{d^2}y}}{{d{x^2}}} + 2\alpha \frac{{dy}}{{dx}} + y = 0\) has two equal roots, then the values of α are |
A. | ± 1 |
B. | 0, 0 |
C. | ± j |
D. | ± 1/2 |
Answer» B. 0, 0 | |