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hello this is the problem i am working on. i started out by using the admittance parameter equation

i1 = y11*v1 + y12*v2

i2 = y21*v1 + y22*v2

so i1 is 20/50 by ohms law. so i1 = 0.4 so by the first equation i get v2 = 32 V.

also plugging in values for the second equation i get i2 = 0.2 A.

finally i got V0 by -I2*50ohms to get -10V.

the second part about the input impedance is where i run into trouble because of the dependent source.

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# Admittance parameters and input impedance

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