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Yuliya22 [10]
3 years ago
11

Find two positive numbers satisfying the given requirements. The product is 216 and the sum is a minimum. (No Response) (smaller

value) (No Response) (larger value)
Mathematics
1 answer:
fgiga [73]3 years ago
6 0

Answer:

x1=\sqrt{216} \  and \ y1=\ \sqrt{216}

Step-by-step explanation:

Let the first number is x1 and other number is y1 then

x1 * y1 =216

Therefore

y1=\frac{216}{x1}

also there sum is

s1 =x1+y1....Eq(1)

Putting the value of y1  in the previous equation

s1\ =x1 + \frac{216}{x1}........Eq(2)

Differentiate the the Eq(2) with respect to x1 we get

\frac{ds1}{dx1} \ =\ 1+216*\frac{1}{-x1^{2} }

\frac{ds1}{dx1} \ =\ 1-\frac{216}{x1^{2} }\ =\ 0

{x1^{2} }\ =\ 216\\  x1=\sqrt{216}

Putting the value of X1 in Eq(1) we get

y1=\frac{216}{\sqrt{216} } \\y1=\frac{216*\sqrt{216} }{216} \\y1=\ \sqrt{216}

So x1=\sqrt{216} \  and \ y1=\ \sqrt{216}

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