SOLUTION: If f(x) = x^2 - 3x and g(x) = cos x, find f( g( pi ) )

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Question 821928: If f(x) = x^2 - 3x and g(x) = cos x, find f( g( pi ) )
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
If f(x) = x^2 - 3x and g(x) = cos x, find f( g( pi ) )
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g(x) = cos x
Sub pi for x
g(pi) = cos(pi) = 0
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find f( g( pi ) )
g(pi) = 0
Sub zero for x
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f(x) = x^2 - 3x
f(g(x)) = f(0) = 0 - 0