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Pilihlah seluruh integral yang bernilai sama dengan jumlahan integral

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$\\displaystyle \\int_{1/\\sqrt{2}}^1 (x^2+y^2)\\, dy\\, dx + \\int_1^{\\sqrt{2}}\\int_0^x (x^2+y^2)\\, dy\\, dx +\\int_{\\sqrt{2}}^{2}\\int_{\\sqrt{4-x^2}}^{x} (x^2+y^2)\\, dy\\, dx.$

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1. $\\displaystyle \\int_0^{\\pi/4} \\int_1^2 r^3\\, dr\\, d\\theta$.
2. \n
", "$\\displaystyle \\int_0^{1/\\sqrt{2}}\\int_{\\sqrt{1-y^2}}^{\\sqrt{4-y^2}} (x^2+y^2)\\, dx\\, dy + \\int_{1/\\sqrt{2}}^{\\sqrt{2}}\\int_{\\sqrt{4-y^2}}^{y} (x^2+y^2)\\, dx\\, dy$.", "
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• $\\displaystyle \\int_0^{\\pi/4} \\int_1^2 r^2\\, dr\\, d\\theta$.
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