Question

What's the difference between f(a^2) and [f(a)]^2?

Answer 1

an example will help you :) !
f(x)=2x+1
what's f(a^2).....and [f(a)]^2

Answer 2

yes that was f(a^2)
now [f(a)]^2 ?

Answer 3

2x+1?

Answer 4

f(x)=2x+1
f(a)=2a+1
[f(a)]^2=.........

Answer 5

\[[f(a)]^2 = (2a + 1)^2\]

\[f(x^2) = 2x^2 + 1\]

Answer 6

Thanks!

Answer 7

Yw ! did you the difference ?

Answer 8

Just a quick interjection here, but are you sure that \[[f(x)]^2=f(x)\cdot f(x)\]And not\[[f(x)]^2=f(x)\circ f(x)=f(f(x))?\]I think this is rather ambiguous.

If you aren't sure however, I'd stick with the first way, which Australopithecus described above.