Let $R$ be the set of real numbers and the mapping $f:R \rightarrow R$ and $g:R \rightarrow R$ be defined by $f(x) = 5 - x^{2}$ and $g(x) = 3x - 4$, then the value of $(fog)( - 1)$ is

Question

Dr. Abubacker · Accepted Answer

(a)
$fog( - 1) = f\{ g( - 1)\}$
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  = f( - 7) = 5 - 49 = - 44$

Q. Let $R$ be the set of real numbers and the mapping $f:R \rightarrow R$ and $g:R \rightarrow R$ be defined by $f(x) = 5 - x^{2}$ and $g(x) = 3x - 4$, then the value of $(fog)( - 1)$ is

Explanation

Reviewed by Dr. Abubacker

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