Answered

What is the simplified base of the function [tex]$f(x)=\frac{1}{4}(\sqrt[3]{108})^x$[/tex]?

A. 3
B. [tex]3 \sqrt[3]{4}[/tex]
C. [tex]6 \sqrt[3]{3}[/tex]
D. 27



Answer :

Let us simplify the base of the function [tex]\( f(x) = \frac{1}{4} (\sqrt[3]{108})^x \)[/tex].

We'll take it step by step:

1. Simplify [tex]\( \sqrt[3]{108} \)[/tex]:
[tex]\[ \sqrt[3]{108} = 108^{1/3} \][/tex]

2. Factorize 108:
[tex]\[ 108 = 4 \times 27 \quad \text{since} \quad 4 \times 27 = 108 \][/tex]

3. Express 108 as a product of two cube roots:
[tex]\[ 108^{1/3} = (4 \times 27)^{1/3} = (4^{1/3} \times 27^{1/3}) \][/tex]

4. Simplify [tex]\( \sqrt[3]{27} \)[/tex]:
[tex]\[ 27^{1/3} = 3 \quad \text{since} \quad 3^3 = 27 \][/tex]

5. Substitute [tex]\( 27^{1/3} \)[/tex] back in:
[tex]\[ 108^{1/3} = 4^{1/3} \times 3 \][/tex]

6. Rewrite [tex]\( f(x) \)[/tex] using this result:
[tex]\[ f(x) = \frac{1}{4} (4^{1/3} \times 3)^x \][/tex]

7. Separate the exponential terms:
[tex]\[ f(x) = \frac{1}{4} (4^{1/3})^x \times 3^x \][/tex]

8. Combine the fraction with the simplified expression:
[tex]\[ = \frac{1}{4} \times (4^{x/3}) \times 3^x \][/tex]

9. Simplify the base expression [tex]\( \frac{1}{4} \times 4^{x/3} \)[/tex]:
[tex]\[ \frac{1}{4} \times 4^{x/3} = \frac{4^{x/3}}{4} = 4^{x/3 - 1} \][/tex]

Considering the base itself without an exponent:

10. Simplify base only:
[tex]\[ = \frac{4^{1/3} \times 3}{4} = 4^{1/3} \times \frac{3}{4} \][/tex]

11. Rewrite using 4 and will simplify gives us:
[tex]\[ = \frac{3 \cdot 4^{1/3}}{4} \][/tex]

12. Combine:
[tex]\[ = \frac{3}{4^{2/3}}=3*4^{-2/3} \][/tex]

13. Calculate numerical base simplification to approximate:
[tex]\[ \approx \boxed{1.1905507889761495} \][/tex]

This simplified base of the function [tex]\( f(x)= \frac{1}{4}(\sqrt[3]{108})^x\approx 1.1905507889761495\)[/tex].