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Encuentra las raíces de la función M(x) = 9x4 − x2.

Mathematics

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Answer

x=0,x=13,x=−13x = 0, x = \frac{1}{3}, x = -\frac{1}{3}

Graph of M(x) = 9x⁴ − x²

Use the left and right arrow keys to trace the curve, up and down to jump between key points, and plus and minus to zoom.

Key points of M(x) = 9x⁴ − x²
Pointxy
x-intercept−0.330
Minimum−0.24−0.03
Maximum00
Minimum0.24−0.03
x-intercept0.330

Step-by-step solution

3 steps

Para encontrar las raíces de la función M(x)=9x4−x2M(x) = 9x^4 - x^2, igualamos la función a cero y resolvemos para xx.

  1. Igualar la función a cero.

    9x4−x2=09x^4 - x^2 = 0
  2. Factorizar el término común x2x^2.

    x2(9x2−1)=0x^2(9x^2 - 1) = 0
  3. Aplicar la propiedad del producto cero, igualando cada factor a cero.

    Primero, para x2=0x^2 = 0:

    x2=0x^2 = 0 x=0x = 0

    Esta es una raíz con multiplicidad 2.

    Segundo, para 9x2−1=09x^2 - 1 = 0:

    9x2−1=09x^2 - 1 = 0 9x2=19x^2 = 1 x2=19x^2 = \frac{1}{9}

    Tomar la raíz cuadrada de ambos lados:

    x=±19x = \pm\sqrt{\frac{1}{9}} x=±13x = \pm\frac{1}{3}

    Esto nos da dos raíces: x=13x = \frac{1}{3} y x=−13x = -\frac{1}{3}.

    Las raíces de la función son:

    x1=0x_1 = 0 x2=13x_2 = \frac{1}{3} x3=−13x_3 = -\frac{1}{3}

    Las raíces de la función son x=0,x=13,x=−13x = 0, x = \frac{1}{3}, x = -\frac{1}{3}.

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