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Assoli18 [71]
2 years ago
5

0%29%20Then%20%5C%3A%20%5C%3A%20ST%20%5C%3A%20%5C%3A%20f%28%20%5Cfrac%7B1%7D%7B50%7D%20%2B%201%29%20%3D%20f%28t%29%20" id="TexFormula1" title=" \bf \: If \: f(t) = 50 sin ( 100 π + 0.4 ) Then \: \: ST \: \: f( \frac{1}{50} + 1) = f(t) " alt=" \bf \: If \: f(t) = 50 sin ( 100 π + 0.4 ) Then \: \: ST \: \: f( \frac{1}{50} + 1) = f(t) " align="absmiddle" class="latex-formula">
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Thank You! :)
Mathematics
1 answer:
Vikentia [17]2 years ago
7 0
<h3>PROOF</h3>

Here it is given that

\displaystyle \sf{f(t) = 50 \: \sin(100\pi t+ 0.4)}

Now

\displaystyle \sf{f \bigg( \frac{1}{50} + t \bigg) }

\displaystyle \sf{ = 50 \: \sin \Bigg[100\pi \bigg( \frac{1}{50} + t \bigg)+ 0.4 \Bigg] }

\displaystyle \sf{ = 50 \: \sin \Bigg[ \bigg(100\pi \times \frac{1}{50} + 100\pi t \bigg)+ 0.4 \Bigg] }

\displaystyle \sf{ = 50 \: \sin \Bigg[ \bigg(2\pi + 100\pi t \bigg)+ 0.4 \Bigg] } \\  \\ \displaystyle \sf{ = 50 \: \sin ( 100\pi t + 0.4 ) }

\sf{ = f(t)}

<h3>Hence proved</h3>

<h2><u>━━━━━━━━━━━━━━━━</u></h2>

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Your information is incomplete as the data is not given. Therefore, an overview will be given.

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A box with a square base and open top must have a volume of 32,000 cm3. find the dimensions of the box that mini- mize the amoun
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Alrighty


squaer base so length=width, nice


v=lwh
but in this case, l=w, so replace l with w
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and volume is 32000
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alrighty

we gots
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we want to minimize the square foottage
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subsitute

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0=2W-1280000/W²
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so sub back
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the box is 20cm height and the width and length are 40cm
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