Which of the following would be used to simplify a complex fraction? A. Multiply the numerator by the conjugate of the denominator.
B. Multiply the numerator and denominator by the conjugate of the denominator.
C. Multiply denominator by the conjugate of the denominator.
D. Multiply the numerator and denominator by the conjugate of the numerator.

sine

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guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

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h= 12 inches

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