Mathematics
02.05.2021 07:32
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Let f(x) = x2 + 6 and g(x)= x+8/x . find ( g o f)( -7)
Let f(x) = x2 + 6 and g(x)= x+8/x . find ( g o f)( -7)
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lauren203
4,5(72 marks)
(g o f)(x)=g(f(x))
so
(g o f)(-7)=g(f(-7))=
g((-7)^2+6)=
g(49+6)=
g(55)=
55+8/55=
55 ad 8/55
(g o f)(-7)=55 and 8/55
(if you meant g(x)=(x+8)/x, then the result is 63/55 or 1 and 8/55)
so
(g o f)(-7)=g(f(-7))=
g((-7)^2+6)=
g(49+6)=
g(55)=
55+8/55=
55 ad 8/55
(g o f)(-7)=55 and 8/55
(if you meant g(x)=(x+8)/x, then the result is 63/55 or 1 and 8/55)
christian2510
5,0(87 marks)
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