\int _1^2\int _2^3\int _0^1\:8xyzdzdxdy
"\\displaystyle\\int\\limits _1^2\\int\\limits _2^3\\int\\limits _0^1\\:8xyz\\:dzdxdy="
"\\displaystyle8\\int\\limits _1^2\\int\\limits _2^3\\int\\limits _0^1\\:xyz\\:dzdxdy="
"\\displaystyle8\\int\\limits _1^2\\int\\limits _2^3\\left[\\int\\limits _0^1\\:xyz\\:dz\\right]dxdy="
"\\displaystyle8\\int\\limits _1^2\\int\\limits _2^3\\left[xy\\int\\limits _0^1\\:z\\:dz\\right]dxdy="
"\\displaystyle8\\int\\limits _1^2\\int\\limits _2^3xy\\left[\\int\\limits _0^1\\:z\\:dz\\right]dxdy="
"\\displaystyle8\\int\\limits _1^2\\int\\limits _2^3xy\\left[\\frac{z^2}{2}\\right]_0^1dxdy="
"\\displaystyle8\\int\\limits _1^2\\int\\limits _2^3xy\\left[\\frac{1^2}{2}-\\frac{0^2}{2}\\right]dxdy="
"\\displaystyle8\\int\\limits _1^2\\int\\limits _2^3xy\\cdot\\frac{1}{2}\\:dxdy="
"\\displaystyle8\\cdot\\frac{1}{2}\\int\\limits _1^2\\int\\limits _2^3xy\\:dxdy="
"\\displaystyle4\\int\\limits _1^2\\left[\\int\\limits _2^3xy\\:dx\\right]dy="
"\\displaystyle4\\int\\limits _1^2\\left[y\\int\\limits _2^3x\\:dx\\right]dy="
"\\displaystyle4\\int\\limits _1^2y\\left[\\int\\limits _2^3x\\:dx\\right]dy="
"\\displaystyle4\\int\\limits _1^2y\\left[\\frac{x^2}{2}\\right]_2^3\\:dy="
"\\displaystyle4\\int\\limits _1^2y\\left[\\frac{3^2}{2}-\\frac{2^2}{2}\\right]\\:dy="
"\\displaystyle4\\int\\limits _1^2y\\left[\\frac{9-4}{2}\\right]\\:dy="
"\\displaystyle4\\int\\limits _1^2y\\cdot\\frac{5}{2}\\:dy="
"\\displaystyle4\\cdot\\frac{5}{2}\\int\\limits _1^2y\\:dy="
"\\displaystyle10\\int\\limits _1^2y\\:dy="
"\\displaystyle10\\left[\\frac{y^2}{2}\\right]_1^2="
"\\displaystyle10\\cdot\\left[\\frac{2^2}{2}-\\frac{1^2}{2}\\right]="
"\\displaystyle10\\cdot\\frac{4-1}{2}="
"\\displaystyle10\\cdot\\frac{3}{2}=" "15"
Answer:
"\\displaystyle\\int\\limits _1^2\\int\\limits _2^3\\int\\limits _0^1\\:8xyz\\:dzdxdy=15"
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