题目
(1)已知平面区域 = (x,y)|sqrt {1-{y)^2}leqslant xleqslant 1,-1leqslant yleqslant 1} .计算 int dfrac (x)(sqrt {{x)^2+(y)^2}}dxdy-|||-.(sqrt (2)-2+ln (1+sqrt (2)))-|||-(2)设平面有界区域D位干第一象阻 小小u 1 1
题目解答
答案
解析] √2-2+ln(1+√2)[解析] √2-2+ln(1+√2)
(√2-2+ln(1+√2))
(√2-2+ln(1+√2))