Let f(x) = –4x and g(x) = 5x2. Andrew finds the composition [f o g](x) as shown below. What error did Andrew make?
= 5(–4x)2
= 5(16x2)
= 80x2
The composition was done in the incorrect order.
The negative sign for f(x) was not included in the calculation.
The coefficient of f(x) was squared incorrectly.
The coefficients should be multiplied and then squared.
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Answer:
g(x)=10 f(x)=-4x
PUT the value in f(g(x))
those are the answers
Similar questions
The negative sign for f(x) was not included in the calculation.
The coefficient of f(x) was squared incorrectly.
The coefficients should be multiplied and then squared.