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Find critical points

AP.CALC: FUN‑1 (EU), FUN‑1.C (LO), FUN‑1.C.1 (EK), FUN‑1.C.2 (EK), FUN‑1.C.3 (EK)


Let g, left parenthesis, x, right parenthesis, equals, sine, left parenthesis, 3, x, right parenthesis, for 0, is less than or equal to, x, is less than or equal to, pi.
Where does g have critical points?
Choose all answers that apply: