Hi
The following question can someone explain the first section where they changed the original circuit into thevinin's equivalent. However can someone explain to be what the answers have done?
View attachment question7.doc
This is what i have done:

i have changed to thevinin's equivalent and then got stuck because i did not know the values of R1 and R2.
Another question when do we use the resistance reflection rule? Is it only used in a emitter resistance amplifier circuit.
P.S
The following question can someone explain the first section where they changed the original circuit into thevinin's equivalent. However can someone explain to be what the answers have done?
View attachment question7.doc
This is what i have done:

i have changed to thevinin's equivalent and then got stuck because i did not know the values of R1 and R2.
Another question when do we use the resistance reflection rule? Is it only used in a emitter resistance amplifier circuit.
P.S