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3 years ago

7

R + 74 = R - 74 is true for: Please solve for R

1 answer:

Alinara [238K]3 years ago

7 0

Answer:

No solution

Step-by-step explanation:

Because ;

R+74=R-74

R-R=-74-74 —> 0= -148

Or R-R=74+74 —> 0=148

I hope I helped you^_^

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Answer:

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Step-by-step explanation:

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$y = \dfrac{6}{x^2}, y =0 , x=1 , x=3$

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$V = 12 \pi ( In \ x ) ^3_{x-1}$

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2) Find the line y=6

Using the disk method here;

where,

Inner radius $r(x) = 6 - \dfrac{6}{x^2}$

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Thus, the volume of the solid is as follows:

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$V = 36 \pi \int ^3_{x-1} \begin {bmatrix} 1 - ( 1 + \dfrac{1}{x^4}- \dfrac{2}{x^2}) \end {bmatrix} \ dx$

$V = 36 \pi \int ^3_{x-1} \begin {bmatrix} - \dfrac{1}{x^4}+ \dfrac{2}{x^2} \end {bmatrix} \ dx$

$V = 36 \pi \int ^3_{x-1} \begin {bmatrix} {-x^{-4}}+ 2x^{-2} \end {bmatrix} \ dx$

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$V = 36 \pi (\dfrac{82}{81})$

$\mathbf{V = \dfrac{328 \pi}{9}}$

The graph of equation for 1 and 2 is also attached in the file below.

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