I've a problem getting the answer for this question using scientific calculator....
2(lg4)^2
The answer I obtained is different from the textbook answer.
Hope someone can help me on this. Thanks.
Well, your problem is probably due to the confusion between log base e and base 10. Base e is symbolized as "ln" on your calculator, while base 10 is symbolised as "log"
for the question, do you mean
$\displaystyle 2(log4)^2$ or $\displaystyle (2 log 4)^2$?
And in what base are those logs?