If f(x) = x2 - 3x + 5 and g(x) = 3x. Find (f · g)(x).
(f◦g)(x) = f(g(x))
Since f(x) = x^2-3x+5,
f(g) = g^2-3g+5
= (3x)^2 - 3(3x) + 5
= 9x^2-9x+5
If you meant (fg)(x), then that's just
(x^2-3x+5)(3x)
which I'm sure you can handle.
Since f(x) = x^2-3x+5,
f(g) = g^2-3g+5
= (3x)^2 - 3(3x) + 5
= 9x^2-9x+5
If you meant (fg)(x), then that's just
(x^2-3x+5)(3x)
which I'm sure you can handle.