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Can someone help me with this question

Can someone help me with this question-example-1
User Diniece
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1 Answer

5 votes

Answer:

The two minimum numbers = 5, 5

Explanation:

Let the first number = x

let the second number = y

Their sum: x + y = 10

Sum of their squares: = x² + y²

y = 10 - x

f(x) = x² + (10 - x)²

f(x) = x² + 100 - 20x + x²

f(x) = 2x² - 20x + 100

Find the derivative of f(x), to obtain the critical points;

f'(x) = 4x - 20

4x - 20 = 0

4x = 20

x = 5

The value of y is calculated as;

y = 10 - x

y = 10 - 5

y = 5

The two minimum numbers = 5, 5

User Katafrakt
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