Math  /  Algebra

QuestionFind the composite functions for f(x)=2x+3f(x)=2x+3 and g(x)=x2g(x)=x^{2} and state their domains: (a) fgf \circ g, (b) gfg \circ f, (c) fff \circ f, (d) ggg \circ g.

Studdy Solution
The domain of the function ggg \circ g is all real numbers because there are no restrictions on the values of xx that can be squared and then squared again.
In conclusion, the composite functions and their domains are(a) (fg)(x)=2x2+3(f \circ g)(x) =2x^{2} +3, domain all real numbers(b) (gf)(x)=(2x+3)2(g \circ f)(x) = (2x+3)^{2}, domain all real numbers(c) (ff)(x)=4x+9(f \circ f)(x) =4x +9, domain all real numbers(d) (gg)(x)=x4(g \circ g)(x) = x^{4}, domain all real numbers

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