level 1
我有一扇蓝色的窗子
楼主
Maximize[{\!\(
\*SubsuperscriptBox[\(\[Integral]\), \(0\), \(x4 - x3\)]\(
\*FractionBox[\(
\*SuperscriptBox[\((
\*SuperscriptBox[\(E\), \(\(-0.1\) \((x3 + z)\)\)] -
\*SuperscriptBox[\(E\), \(-1\)])\), \(0.69\)]
\*SuperscriptBox[\((1 -
\*SuperscriptBox[\(E\), \(-1\)])\), \(0.31\)]\),
SuperscriptBox[\((
\*SuperscriptBox[\(E\), \(\(-0.069\) \((x3 + z)\)\)] +
\*SuperscriptBox[\((1 -
\*SuperscriptBox[\(E\), \(\(-0.1\) \((x3 +
z)\)\)])\), \(0.69\)])\), \(1/
0.69\)]] \[DifferentialD]z\)\), 6 <= x3 <= x4 <= 10}, {x3, x4}]
结果显示 Maximize::ivar: 7 is not a valid variable.
2024年06月20日 02点06分
1
\*SubsuperscriptBox[\(\[Integral]\), \(0\), \(x4 - x3\)]\(
\*FractionBox[\(
\*SuperscriptBox[\((
\*SuperscriptBox[\(E\), \(\(-0.1\) \((x3 + z)\)\)] -
\*SuperscriptBox[\(E\), \(-1\)])\), \(0.69\)]
\*SuperscriptBox[\((1 -
\*SuperscriptBox[\(E\), \(-1\)])\), \(0.31\)]\),
SuperscriptBox[\((
\*SuperscriptBox[\(E\), \(\(-0.069\) \((x3 + z)\)\)] +
\*SuperscriptBox[\((1 -
\*SuperscriptBox[\(E\), \(\(-0.1\) \((x3 +
z)\)\)])\), \(0.69\)])\), \(1/
0.69\)]] \[DifferentialD]z\)\), 6 <= x3 <= x4 <= 10}, {x3, x4}]
结果显示 Maximize::ivar: 7 is not a valid variable.
