Question

for the sequence given by a1=3 and an=2an-1-4 find the first three terms

Answer 1

\[a_1=3\\a_n=2a_{n-1}-4\]
that it?

Answer 2

first put n=2
u'll get\[a_2=2a_{2-1}-4=2a_1-4=(2 \times 3)-4=6-4=2\]
next:put n=3

Answer 3

having trouble?

Answer 4

then what sidsiddhartha

Answer 5

then u'll get\[a_3=2a_2-4=(2 \times 2)-4=0\\then~again~put,n=4\\a_4=2a_3-4=(2 \times 0)-4=-4\]
so next three terms are=2,0,-4

Answer 6

thank you so much :)

Answer 7

yw!! :)

Answer 8

do you think you would have time to help me with one more problem

Answer 9

yeah i can :)

Answer 10

are you good with graphs

Answer 11

i'll try

Answer 12

Im not sure how to write the problem on here