Solved

Find f[g(x)]f[g(x)] And g[f(x)]g[f(x)]
- f(x)=x+5;g(x)=4x1f(x)=\sqrt{x+5} ; g(x)=4 x-1 A) f[g(x)]=4x2+1f[g(x)]=\sqrt{4 x^{2}+1} g[f(x)]=4x25g[f(x)]=\sqrt{4 x^{2}-5}

Question 309

Multiple Choice

Find f[g(x) ]f[g(x) ] and g[f(x) ]g[f(x) ] .
- f(x) =x+5;g(x) =4x1f(x) =\sqrt{x+5} ; g(x) =4 x-1


A) f[g(x) ]=4x2+1f[g(x) ]=\sqrt{4 x^{2}+1}
g[f(x) ]=4x25g[f(x) ]=\sqrt{4 x^{2}-5}
B) f[g(x) ]=2x+1f[g(x) ]=2 \sqrt{x+1}
g[f(x) ]=4x+51g[f(x) ]=4 \sqrt{x+5}-1
C) f[g(x) ]=2x+5f[g(x) ]=2 \sqrt{x+5}
g[f(x) ]=4x+11g[f(x) ]=4 \sqrt{x+1}-1
D) f[g(x) ]=4x25f[g(x) ]=\sqrt{4 x^{2}-5}
g[f(x) ]=4x25g[f(x) ]=\sqrt{4 x^{2}-5}

Correct Answer:

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