Verified answer

1)  R12=R1*R2/(R1+R2)=40*25/(40+25)=15.38

R123=R12+R3=15.38+14=29.38

R1235=R123*R5/(R123+R5)=29.38*15/(29.38+15)=10

R12345=R1235+R4=10+4=14

Rэ=R12345*R6/(R12345+R6)=14*10/(14+10)=5.83 Ом

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2) C234=C2+C3+C4=2+4+5=9 пФ

C1234=C1*C234/(C1+C234)=1*9/(1+9)=0.9

C12345=C1234*C5/(C1234+C5)=0.9*4/(0.9+4)=0.73

Cэ=С12345*С6/(C12345+C6)=0.73*4/(0.73+4)=0.62 пф

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