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3 years ago

What is the value of the function at x=3 Please help me i need help asap

Mathematics

2 answers:

ivolga24 [154]3 years ago

5 0

The answer is 3,4 hope it helps

andreev551 [17]3 years ago

3 0

The answer should be 4

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Step-by-step explanation:

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If x² + xy – 3y = 3, then at the point (2, 1), dy/dx

Scilla [17]

Answer:

Step-by-step explanation:

We have the equation:

$x^2+xy-3y=3$

Take the derivative of both sides with respect to x:

$\frac{d}{dx}[x^2+xy-3y]=\frac{d}{dx}[3]$

Implicitly differentiate:

$2x+y+x\frac{dy}{dx}-3\frac{dy}{dx}=0$

Solve for dy/dx:

$\frac{dy}{dx}(x-3)=-2x-y\\$

Divide:

$\frac{dy}{dx}=-\frac{2x+y}{x-3}$

To find dy/dx at (2, 1), substitute 2 for x and 1 for y. So:

$\frac{dy}{dx}_{(2, 1)}=-\frac{2(2)+1}{2-3}=-\frac{5}{-1}=5$

Hence, our answer is A.

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3 years ago

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Pachacha [2.7K]

I did it digitally on my iPad hope it helps please mark me brainliest

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2 years ago

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2 years ago

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Answer:

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We want the ratio of coaches to students

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