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sergey [27]
3 years ago
14

What is rational or irrational

Mathematics
2 answers:
kondor19780726 [428]3 years ago
3 0
A rational number is a number that you can be written as a ratio and a irrational number is a real number that cannot be written as a ratio or integer as a fraction.
Blizzard [7]3 years ago
3 0
Rational numbers can be written in form
a/b whre b is not zero
 just fyi, repeating decimals are rational example
0.3333333. means 1/3
if there is a repeating part, there is a fraction for it

irrational numbers cannot be written in a/b
they have no repeating parts, and go on infintely
famous exampes are π and e and √2
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Ede4ka [16]

Answer:

Step-by-step explanation:

Area of left rectangle:

Length = 36 ft

Width  = 8

Area1 = length * width

         = 36 * 8

        =  288 square feet

Area of right rectangle:

Length = 15 ft

Width = 22 - 8 = 14 ft

Area2 = 15 * 14

          = 210 square feet

Area of the figure = Area1 + area2

                            = 288 + 210

                            = 498 square feet

6 0
3 years ago
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zimovet [89]

Product rule:

\dfrac{\mathrm d}{\mathrm dx}(x^2e^x\log x)

=\dfrac{\mathrm d(x^2)}{\mathrm dx}e^x\log x+x^2\dfrac{\mathrm d(e^x)}{\mathrm dx}\log x+x^2e^x\dfrac{\mathrm d(\log x)}{\mathrm dx}

Power rule:

\dfrac{\mathrm d(x^2)}{\mathrm dx}=2x

The exponential function is its own derivative:

\dfrac{\mathrm d(e^x)}{\mathrm dx}=e^x

Assuming the base of \log x is e, its derivative is

\dfrac{\mathrm d(\log x)}{\mathrm dx}=\dfrac1x

But if you mean a logarithm of arbitrary base b, we have

y=\log_bx\implies x=b^y=e^{y\ln b}\implies1=e^{y\ln b}\ln b\dfrac{\mathrm dy}{\mathrm dx}

\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{e^{-y\ln b}}{\ln b}=\dfrac1{b^y\ln b}

\implies\dfrac{\mathrm d(\log_bx)}{\mathrm dx}=\dfrac1{x\ln b}

So we end up with

2xe^x\log x+x^2e^x\log x+\dfrac{x^2e^x}x

=xe^x(2\log x+x\log x+1)

8 0
3 years ago
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Step-by-step explanation:

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God Bless! :)

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Answer:okkkkk

Step-by-step explanation:

4 0
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