Pregunta
Question 5 Given two functions \( f(x)=x^{6}-4 x^{4} \) and \( g(x)=x^{2} \), find and simplify the following: a) \( (f g)(x)=\square 99 \) pt \( 2 \leftrightarrows \) b) \( \left(\frac{f}{g}\right)(x)=\square \) Question Help: Video 1 Video 2 Written Example 1 D Post to forum
Ask by Nunez Stanley. in the United States
Feb 26,2025
Solución de inteligencia artificial de Upstudy
Respuesta verificada por el tutor
Responder
a) (fg)(x) = x⁸ - 4x⁶
b) (f/g)(x) = x⁴ - 4x² (for x ≠ 0)
Solución
We are given the functions f(x) = x⁶ - 4x⁴ and g(x) = x².
a) To find (fg)(x), multiply f(x) by g(x):
(fg)(x) = (x⁶ - 4x⁴) · x² = x⁶·x² - 4x⁴·x² = x⁸ - 4x⁶.
b) To find (f/g)(x), divide f(x) by g(x):
(f/g)(x) = (x⁶ - 4x⁴) / x².
We can simplify by dividing each term by x² (note: x ≠ 0):
x⁶ / x² = x⁴ and 4x⁴ / x² = 4x².
Thus, (f/g)(x) = x⁴ - 4x², with the condition x ≠ 0 (because division by zero is undefined).
Final Answers:
a) (fg)(x) = x⁸ - 4x⁶
b) (f/g)(x) = x⁴ - 4x² (for x ≠ 0)
Respondido por UpStudy AI y revisado por un tutor profesional
Como
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Mind Expander
To find \( (fg)(x) \), simply multiply the two functions together: \[ (fg)(x) = f(x) \cdot g(x) = (x^{6} - 4x^{4})(x^{2}) = x^{8} - 4x^{6}. \] So, \( (fg)(x) = x^{8} - 4x^{6} \). Now for \( \left( \frac{f}{g} \right)(x) \): \[ \left( \frac{f}{g} \right)(x) = \frac{f(x)}{g(x)} = \frac{x^{6} - 4x^{4}}{x^{2}}. \] Simplifying gives us: \[ \left( \frac{f}{g} \right)(x) = x^{4} - 4x^{2}, \] provided \( x \neq 0 \).
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