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3 years ago

X-1 / x-1 = 1 What is x?

Mathematics

1 answer:

lions [1.4K]3 years ago

4 0

Answer:

$\large\boxed{x\in\mathbb{R}-\{1\}}\to\text{any real number except 1}$

Step-by-step explanation:

$\dfrac{x-1}{x-1}=1\\\\\text{Domain:}\ x-1\neq0\qquad\text{add 1 to both sides}\\\\x\neq1\\\\\text{We know:}\ \dfrac{a}{a}=1\ \text{for any real number except 0}.\\\\\text{Therefore}\ x\ \text{is any real number except 1}.$

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Answer:

Since stress is greater than ultimate strength, the wire will break.

Step-by-step explanation:

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$\sigma = \frac{4\cdot F}{\pi\cdot D^{2}}$ (1)

Where:

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$D$ - Cross-section diameter, measured in meters.

Please notice that axial force is the weight of the man hanging from wire.

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