3 years ago

I don’t know what to do

Mathematics

1 answer:

alex41 [277]3 years ago

3 0

Answer:

I think that it is non tangent

Step-by-step explanation:

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10 yards to 10 feet ratio

jarptica [38.1K]

Answer:

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Step-by-step explanation:

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balu736 [363]

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katrin2010 [14]

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If the substitution u=x/2 is made, the intergal from 2 to 4 1-(x/2)^2/x dx =

stich3 [128]

$\displaystyle\int_2^4\frac{1-\left(\frac x2\right)^2}x\,\mathrm dx$

Setting $u=\dfrac x2$ gives $\mathrm du=\dfrac{\mathrm dx}2$ , or $2\,\mathrm du=\mathrm dx$ . This also makes $2u=x$ .

When $x\to2^+$ , you have $u\to\dfrac22=1$ , while when $x\to4^-$ , you have $u\to\dfrac42=2$ .

Putting everything together, you find that

$\displaystyle\int_2^4\frac{1-\left(\frac x2\right)^2}x\,\mathrm dx=\int_1^2\frac{1-u^2}{2u}(2\,\mathrm du)=\int_1^2\frac{1-u^2}u\,\mathrm du$

which means (B) is the correct answer.

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2 years ago

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snow_tiger [21]

Answer:

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