Signals not enabled for storage cannot be part of the Storage Qualifier condition
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(n|N) die "Not saved, result left in file new" ;; esac done :<<'auxfiles' begin-base64 644 - UEsDBBQACAAIAMOCfFQAAAAAAAAAAAECAAAJABwAUkVBRE1FLm1kVVQJAAOO xEFihsVBYnV4CwABBOgDAAAE6AMAAEWRwWrDMAyG734KwS4tNFnHbj1t0JJL GTu0bDB2cBylMXXsYMvzAn34yUm7BhPwL+nTL/kBTDyJC+TvjCNcoMGgvB5I...
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A. ydx+xdy B. xdx+ydy C. x(dx+dy) D. dx+dy 查看完整题目与答案 z=F(x,y,z) 的一个法向量为 A. {Fx,Fy,Fz-1} B. {Fx-1,Fy-1,Fz-1} C. {Fx,Fy,Fz} D. {-Fx,-Fy,Fz} 查看完整题目与答案 设可微函数f(x,y)在点(x₀,y。)取得极小值,则下列结论正确的...
解:将方程分组为[(9a;2 - 1) dx - 4ydy] + {ydx + xdy) = 0,凑微分 得d(3;c3 - X - 2y2) + d{xy) = 0,积分得通If: - x - 2y'� + xy = c. 5) [y_i sm{x/y) — yx~'� cos{y/x) + 1] dx + |x_i cos{y/x) — xy~'� sm{x/y) + ?dy =...
r = 1 A • J/ = 1 — ydx + xdy + Cdz = ^2 0-¥(Rcos^ + 2)7?cos0V0 / / =『(相 + 27? cos eyie = 2/ 3.用以下两种方法求矢量场A = x(z — y)i + y(x -z)/ + z(y - x)k在点M (1,2,3)处沿方向n = i + 2j + 2k的环量 ...
26、Vxdy=4ydx+(4x+1)dy= d=dx+dy=-Vydx+Vxdy= 4ydx+(4x+1)dy=4xy+y6-2 平面不可压缩流体速度分布:Vx=x2-y2+x; Vy=-(2xy+y).(1) 流动满足连续性方程否? (2) 势函数、流函数存在否? (3)求、 .解:(1)由于+=2x1(2x1)0,故该流动满足连续性方程,流动存在.(2)由z=()=0, 故流...
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