Suppose a(x) = 2x + 5 and b(x) = 2x - 5. Find (a\circ b)(3) - (b\circ a)(3).
\((a\circ b)(3) - (b\circ a)(3) \)
b(3) = 2(3) - 5 = 1
a(3) = 2(3) + 5 = 11
a[b(3)] - b[a(3) ] =
a (1) - b(11) =
[ 2(1) + 5 ] - [ 2(11) -5 ] =
7 - 17 =
-10
+1911 
