I want to know how to solve those problems... please helpme! 10.5V d. 5.5 V 8. Find the transistor which is in cut-off mode. ( O+10V 9+3V O+1.2V 9+4V -2.3V o- +sV +1.7Vo- +1.7V o -3V (b) (c) (d) (b)...

I want to know how to solve those problems... please help me!

10.5V d. 5.5 V 8. Find the transistor which is in cut-off mode. ( O+10V 9+3V O+1.2V 9+4V -2.3V o- +sV +1.7Vo- +1.7V o -3V (b) (c) (d) (b) (e) (d) a In the following circuit. A, Bare the inputs, Fis the output. Find the name of the gate. ( (b) OR (a) AND (c) NOT (d) NAND D1 OF BO D2 -5 V