The inductance of the oscillatory circuit changes periodically in time according to the law indicated in the figure. At what value of the capacitance of the oscillatory circuit is parametric resonance possible? At what maximum value of the active resistance of the circuit will parametric oscillations be excited? Perform a numerical calculation for L0 = 4•10-4 G, DL = 4•10-5 G, t0 = 10-6 s.

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