I'm helping my nephew with a function question and i'm stuck on one part - I should know this really.
f(x) = x^2 - 19, domain = (-INF, 0)
g(x) = 1 -(1/2) x, domain = (6, INF).
Find range of f and g which i found to be
(-19, INF) and (-INF, -2).
Find fg - which I got to be (1 - (1/2)x)^2 - 19.
Write down the domain and range of fg.
- i'm a bit confused about this part.

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I've done this stuff before but cant remember this bit.

hi. i think i can help. consider the intersection of the two domains

what is the intersection of the two domains?

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