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For the function f(x) = x2, what effect will multiplying f(x) by have on the graph?A.The graph will be stretched vertically.B.The graph will be compressed horizontally.C.The graph will be compressed vertically.D.The graph will be shifted horizontally.

Question

For the function f(x) = x2, what effect will multiplying f(x) by have on the graph?A.The graph will be stretched vertically.B.The graph will be compressed horizontally.C.The graph will be compressed vertically.D.The graph will be shifted horizontally.

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Solution

Para responder a esta pregunta, sigamos los pasos necesarios para entender el efecto de multiplicar la función f(x)=x2 f(x) = x^2 :

  1. Identificar la función original: La función dada es f(x)=x2 f(x) = x^2 .

  2. Multiplicar la función por un factor: Supongamos que multiplicamos la función por un factor k k , resultando en kf(x)=kx2 k \cdot f(x) = k \cdot x^2 .

  3. Analizar el efecto del factor k k :

    • Si k>1 k > 1 , la función kx2 k \cdot x^2 se estira verticalmente porque cada valor de f(x) f(x) se multiplica por un número mayor que 1.
    • Si 0<k<1 0 < k < 1 , la función kx2 k \cdot x^2 se comprime verticalmente porque cada valor de f(x) f(x) se multiplica por un número menor que 1.
    • Si k<0 k < 0 , además de los efectos anteriores, la función se reflejaría sobre el eje x, pero esto no es relevante para la pregunta actual.
  4. Determinar la opción correcta:

    • La opción A dice que la gráfica se estirará verticalmente.
    • La opción B dice que la gráfica se comprimirá horizontalmente.
    • La opción C dice que la gráfica se comprimirá verticalmente.
    • La opción D dice que la gráfica se desplazará horizontalmente.

Dado que multiplicar f(x) f(x) por un factor k k afecta la altura de la gráfica (es decir, la estira o comprime verticalmente), la opción correcta depende del valor de k k . Sin embargo, la pregunta no especifica el valor de k k , pero en general, multiplicar por un factor k k afecta verticalmente.

Por lo tanto, la respuesta correcta es:

A. La gráfica se estirará verticalmente.

This problem has been solved

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