二重积分转换极坐标?

请问r是如何得到的?
2024-12-05 10:08:12
推荐回答(2个)
回答1:

y = x^4, rsint = r^4(cost)^4, r^3 = sint/(cost)^4
r = (sint)^(1/3)/(cost)^(4/3)

回答2: