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The area of the region bounded by the cu...

The area of the region bounded by the curve `sqrtx+sqrty=sqrta(x,ygt0)` and the coondinate axes is

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To find the area of the region bounded by the curve \( \sqrt{x} + \sqrt{y} = \sqrt{a} \) (for \( x, y > 0 \)) and the coordinate axes, we can follow these steps: ### Step 1: Rearranging the equation We start with the equation of the curve: \[ \sqrt{x} + \sqrt{y} = \sqrt{a} \] We can isolate \( \sqrt{y} \): \[ \sqrt{y} = \sqrt{a} - \sqrt{x} \] Now, squaring both sides gives: \[ y = (\sqrt{a} - \sqrt{x})^2 \] ### Step 2: Expanding the equation Expanding the right-hand side: \[ y = a - 2\sqrt{a}\sqrt{x} + x \] This can be rewritten as: \[ y = x + a - 2\sqrt{a}\sqrt{x} \] ### Step 3: Setting up the integral for area To find the area under the curve from \( x = 0 \) to \( x = a \), we will integrate the function \( y \): \[ \text{Area} = \int_0^a (a + x - 2\sqrt{a}\sqrt{x}) \, dx \] ### Step 4: Splitting the integral We can split the integral into three parts: \[ \text{Area} = \int_0^a a \, dx + \int_0^a x \, dx - 2\sqrt{a} \int_0^a \sqrt{x} \, dx \] ### Step 5: Calculating each integral 1. The first integral: \[ \int_0^a a \, dx = a \cdot x \bigg|_0^a = a^2 \] 2. The second integral: \[ \int_0^a x \, dx = \frac{x^2}{2} \bigg|_0^a = \frac{a^2}{2} \] 3. The third integral: \[ \int_0^a \sqrt{x} \, dx = \frac{2}{3} x^{3/2} \bigg|_0^a = \frac{2}{3} a^{3/2} \] ### Step 6: Combining the results Now substituting back into the area formula: \[ \text{Area} = a^2 + \frac{a^2}{2} - 2\sqrt{a} \cdot \frac{2}{3} a^{3/2} \] This simplifies to: \[ \text{Area} = a^2 + \frac{a^2}{2} - \frac{4}{3} a^2 \] Combining the terms: \[ \text{Area} = a^2 \left(1 + \frac{1}{2} - \frac{4}{3}\right) \] Finding a common denominator (6): \[ \text{Area} = a^2 \left(\frac{6}{6} + \frac{3}{6} - \frac{8}{6}\right) = a^2 \left(\frac{1}{6}\right) \] ### Final Result Thus, the area of the region bounded by the curve and the coordinate axes is: \[ \text{Area} = \frac{a^2}{6} \]
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