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2 years ago

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Mathematics

2 answers:

sesenic [268]2 years ago

6 0

Hello there! :)

$\sqrt{81}$

It's rational

it's an integer

Hope it helps!

~Just an emotional teen listening to her favorite song "Try Everything"

$SilentNature$

Naddika [18.5K]2 years ago

3 0

Step-by-step explanation:

<h2>√81 is an Rational Number..</h2>

<h2>As it can be expressed in p/q form...</h2>

(~‾▿‾)~(~‾▿‾)~(~‾▿‾)~(~‾▿‾)~(~‾▿‾)~(~‾▿‾)~(~‾▿‾)~(~‾▿‾)~

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Find f if f′(x)=2x−3/x^4, x>0 and f(1)=2.

slavikrds [6]

$f'(x)=2x-\dfrac3{x^4}$
$\displaystyle\int f'(x)\,\mathrm dx=\int\left(2x-\frac3{x^4}\right)\,\mathrm dx$
$f(x)=x^2+\dfrac1{x^3}+C$

Given that $f(1)=2$ , we get

$2=1^2+\dfrac1{1^3}+C$
$2=2+C$
$\implies C=2$

so that

$f(x)=x^2+\dfrac1{x^3}$

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3 years ago

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Oduvanchick [21]

We can get two different equations from this:

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and

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So:

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3 years ago

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