To solve the problem shown in the figure attached, you only have to substitute the values of the variable x given in the table,as below
- For the first table, you have:
a=4^0=1
b=4^-2=1/16
c=4^-4=1/256
- In the other table, the second one, you have:
d=(2/3)^0=1
e=(2/3)^2=4/9
f=(2/3)^4=16/81
