Mathematics: For which pairs of functions is (f*g)(x)=x? a. f(x)=x^2 and g(x)=1/x b. f(x)=2/x and g(x)=2/x c. f(x)=x-2/3 and g(x)=2-3x d. f(x)=1/2x-2 and g(x)=1/2x+2

For which pairs of functions is (f*g)(x)=x? a. f(x)=x^2

holmesleauja

28.12.2021

Step-by-step explanation:

f(x)=-(x-3)(x+11)

The zeros of the equation are 3 and -11

The vertex is 1/2 way between the two values

(3+-11)/2 = -8/2 = -4

The vertex is at x= -4

We substitute this value into the equation to find the y value

f(x)=-(-4-3)(-4+11)

= -(-7)(7)

=49

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