Selesaikan {left(1/5right)}^-1-{left(1/7right)}^-1

Evaluasi

- 2

Langkah Solusi

(\frac{1}{5})^{- 1} - (\frac{1}{7})^{- 1}

Hitung

\frac{1}{5}

sampai pangkat

- 1

dan dapatkan

5

5 - (\frac{1}{7})^{- 1}

Hitung

\frac{1}{7}

sampai pangkat

- 1

dan dapatkan

7

5 - 7

Kurangi

7

dari

5

untuk mendapatkan

- 2

- 2

Faktor

(- 1) \times 2

Kuis

Arithmetic

5 soal serupa dengan:

(\frac{1}{5})^{- 1} - (\frac{1}{7})^{- 1}

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Find a smallest value of the expression

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Note that \begin{align} \frac{1}{3}a^2-4a+\frac{3}{4} &= \left(\frac{a}{\sqrt{3}}\right)^2 - 2\left(\frac{a}{\sqrt{3}}\right)(2\sqrt{3}) + (2\sqrt{3})^2-12+\frac{3}{4} \\ & = \left( ...

Showing

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I thought it might be instructive to prove this inequality using only Bernoulli's Inequality and some straightforward arithmetic. To that end, we proceed. Let

s_{n} = (1 - \frac{1}{n}) - (1 - \frac{1}{n})^{n}

...

Applying the laws of exponents, how do we simplify

(16^{- \frac{1}{2}})^{- \frac{1}{2}}

https://socratic.org/questions/applying-the-laws-of-exponents-how-do-we-simplify-16-1-2-1-2

2

Explanation:

using the laws of exponents

• (x) (a^{m})^{n} = a^{m n}

• (x) a^{\frac{m}{n}} = n a^{m}

...

Finding a value of

a

to satisfy an expression of the form

a * (1 - \frac{1}{b})^{(a - 1)} = r

https://math.stackexchange.com/questions/236902/finding-a-value-of-a-to-satisfy-an-expression-of-the-form-a1-frac1b

We have ...

How do you simplify

(- \frac{1}{5})^{- 2} + (- 2)^{- 2}

https://socratic.org/questions/how-do-you-simplify-1-5-2-2-2

\frac{1}{( - \frac{1}{5} ) ^{2}} + \frac{1}{( - 2 ) ^{2}} = 25 \frac{1}{4}

Explanation: As

a^{- n} = \frac{1}{a ^{n}}

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https://math.stackexchange.com/questions/1237223/finding-a-node-in-a-full-binary-tree-expected-number-of-comparisons

I didn't check every detail but the answer looks about right. Intuitively, most of the nodes are near the leaves, because the levels near the root have very few nodes, for instance the first half of ...

Salin

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5-\left(\frac{1}{7}\right)^{-1}

Hitung \frac{1}{5} sampai pangkat -1 dan dapatkan 5.

5-7

Hitung \frac{1}{7} sampai pangkat -1 dan dapatkan 7.

-2

Kurangi 7 dari 5 untuk mendapatkan -2.

Contoh

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