If f(a) = 2^(a+1), how can you write f(2a)?
(1) 2f(a)
(2) f(a) /2
(3) 2* {f(a)}^2
(4) {f(a)}^2
(5) {f(a)}^2 /2
Which is it?
https://web2.0calc.com/questions/i-need-help_58258
