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If f(x)= tan(x) and g(x)= 3𝑥2x 2 , then (𝑔∘𝑓)(𝜋6)=(g∘f)( 6π​ )=A.1B.3(𝜋6)23( 6π​ ) 2 C.tan⁡((3𝜋6)2)tan(( 63π​ ) 2 )closeD.1.077E.None of the above

Question

If f(x)= tan(x) and g(x)= 3𝑥2x 2 , then (𝑔∘𝑓)(𝜋6)=(g∘f)( 6π​ )=A.1B.3(𝜋6)23( 6π​ ) 2 C.tan⁡((3𝜋6)2)tan(( 63π​ ) 2 )closeD.1.077E.None of the above

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Solution

Para resolver la pregunta, sigamos los siguientes pasos:

  1. Primero, identifiquemos las funciones dadas:

    • f(x)=tan(x) f(x) = \tan(x)
    • g(x)=3x2 g(x) = 3x^2
  2. Necesitamos encontrar (gf)(π6)(g \circ f)\left(\frac{\pi}{6}\right), lo que significa que primero evaluamos f(π6) f\left(\frac{\pi}{6}\right) y luego usamos ese resultado en g(x) g(x) .

  3. Evaluemos f(π6) f\left(\frac{\pi}{6}\right) : f(π6)=tan(π6) f\left(\frac{\pi}{6}\right) = \tan\left(\frac{\pi}{6}\right) Sabemos que tan(π6)=13\tan\left(\frac{\pi}{6}\right) = \frac{1}{\sqrt{3}}.

  4. Ahora, usemos este resultado en g(x) g(x) : g(f(π6))=g(13) g\left(f\left(\frac{\pi}{6}\right)\right) = g\left(\frac{1}{\sqrt{3}}\right) g(13)=3(13)2 g\left(\frac{1}{\sqrt{3}}\right) = 3 \left(\frac{1}{\sqrt{3}}\right)^2 =3(13) = 3 \left(\frac{1}{3}\right) =1 = 1

Por lo tanto, (gf)(π6)=1(g \circ f)\left(\frac{\pi}{6}\right) = 1.

La respuesta correcta es: A. 1

This problem has been solved

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