Measurement of of an npn transistor at 50 MHz shows that || = 10 at IC

Measurement of β of an npn transistor at 50 MHz shows that |β| = 10 at IC = 0.2 mA and 12 at IC = 1.0 mA. Furthermore, Cμ was measured and found to be 0.1 pF. Find fT at each of the two collector currents used. What must τF and Cje be?

1. The values of at each of the two collector currents used in the above problem.

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