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Verify Inverse Functions by Composition
Grade Level
Praxis Core
5165.109 Verify Inverse Functions by Composition
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f(x) = x³ - 1 and g(x) = ∛(x - (-1)). Which verification is complete?
A
Check both f(g(x)) = x and g(f(x)) = x; both hold for every real x.
B
Check only that the graphs have the same y-intercept.
C
Check that the functions have equal formulas.
D
Check only f(0) = g(0).
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