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Determine Whether (fg)(x)=x and whether (gf)(x)=x( f \circ g ) ( x ) = x \text { and whether } ( g \circ f ) ( x ) = x \text {. }

Question 522

Multiple Choice

Determine whether (fg) (x) =x and whether (gf) (x) =x( f \circ g ) ( x ) = x \text { and whether } ( g \circ f ) ( x ) = x \text {. }
- f(x) =x+1,g(x) =x2f ( x ) = \sqrt { x + 1 } , g ( x ) = x ^ { 2 }


A) Yes,, no
B) Yes, yes
C) No, yes
D) No, no

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