4 years ago

If xy is rational, must x and y each be rational?

1 answer:

3 0

<span>Your answer is is simply,no x and y could have a common irrational factor. </span>

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goldenfox [79]

Just add them together

6 0

4 years ago

Alex777 [14]

Answer:

Step-by-step explanation:

Here the region between two curves is rotated about a vertical line.

The functions are

$y = sin^2x, \\y = sin^4x, \\x in [0,[pi]/2].$

Intersecting points are x=0 and x =pi/2

Since rotated about x = pi/2 we get

using cylindrical shell method

Volume = $2\pi rh\\=2\pi \int\limits^\frac{\pi}{2} _0 {xy} \, dx \\=2\pi \int\limits^\frac{\pi}{2} _0 (x+\frac{\pi}{2} )(sin^2 x -sin^4 x) dx\\$

From wolfram alpha we find that

Volume= $2\pi (\frac{3\pi^2 }{64)} =\frac{6\pi^3}{64}$

4 0

4 years ago

miv72 [106K]

Step-by-step explanation:

What's the value for a? This cannot be solved unless 'a' or 'n' is given

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4 years ago

soldier1979 [14.2K]

The GCF of 8 and 6 is two

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3 years ago

Novosadov [1.4K]

It should be number 2

5 0

3 years ago