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You are standing at the origin (0,0) watching a speed skating race. Your favourite competitor, Carl Friedrich Gauss, is fast approaching. From where you are standing, he takes the path f(x)=4/x for 0.5≤x≤4. What is the shortest distance that Carl comes from you? Hint: The distance between the origin (0,0) and a point (x,y) is D(x,y)= √x²+√y²

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Final answer:

The shortest distance Carl Friedrich Gauss comes from the origin while following the path f(x) = 4/x for 0.5 ≤ x ≤ 4 is approximately 4.442 units.

Step-by-step explanation:

To find the shortest distance between the origin and a point on the curve f(x) = 4/x, we'll use the distance formula D(x,y) = √(x² + y²). Here, we're interested in the distance from the origin (0,0) to a point (x, 4/x) on the curve.

The distance formula yields D(x) = √(x² + (4/x)²), representing the distance between the origin and the point on the curve. To find the minimum distance, we'll differentiate D(x) with respect to x and find its critical points.

D(x) = √(x² + (16/x²))

D'(x) = (1/2) * (x² + 16/x²)^(-1/2) * (2x - 32/x³)

Setting D'(x) = 0 to find critical points:

0 = 2x - 32/x³

2x = 32/x³

x⁴ = 16

x = (16)^(1/4)

x = 2 (ignoring the negative root as it's not within the given domain)

So, the critical point occurs at x = 2. To confirm this point yields the minimum distance, we'll evaluate D(x) at x = 2:

D(2) = √(2² + 4²) = √(4 + 16) = √20 ≈ 4.472

Therefore, the shortest distance Carl Friedrich Gauss comes from the origin is approximately 4.442 units when following the path f(x) = 4/x for 0.5 ≤ x ≤ 4.

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