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For the function f defined by f(x)=x^2+2x+3 find f(−x),−f(x) , and −f(−x). Also, For the function g defined by g(x)= 55/x +3x find g(−x),−g(x), and −g(−x). Help!
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For the function f defined by f(x)=x^2+2x+3 find f(−x),−f(x) , and −f(−x).

Also, For the function g defined by g(x)= 55/x +3x find g(−x),−g(x), and −g(−x).

Help!

User Alex Stelea
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1 Answer

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f(−x)=(-x)^2+2(-x)+3=x^2-2x+3
−f(x)=-(x^2+2x+3)=-x^2-2x-3
−f(−x)=-(x^2-2x+3)= -x^2+2x-3

g(−x)=55/(-x) +3x =-55/x +3x
−g(x)=-(55/x +3x )= - 55/x -3x
−g(−x)=-(-55/x +3x )=55/x -3x
User Vagiz Duseev
by
8.2k points
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