Wednesday, October 9, 2013

If f(x)=4x , g(x)=2x-1 and h(x)=x^2+1, what is fogoh(x)? Please simplify the result.

The functions f(x)=4x , g(x)=2x-1 and h(x)=x^2+1. We need
to determine fogoh(x)


fogoh(x) =
f(g(h(x)))


=> f(g(x^2 +
1)


=> f( 2*(x^2 + 1) -
1)


=> 4*(2*(x^2 + 1) -
1)


=> 4*(2x^2 + 2 -
1)


=> 4*(2x^2 +
1)


=> 8x^2 +
4


The required value of fogoh(x) = 8x^2 +
4

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