A、∫0πdθ∫02acosθf(rcosθ,rsinθ)rdr B、∫0πdθ∫02asinθf(rcosθ,rsinθ)rdr C、∫-π/2π/2dθ∫02acosθf(rcosθ,rsinθ)rdr D、∫-π/2π/2dθ∫02asinθf(rc

admin2022-11-10  45

问题

选项 A、∫0πdθ∫02acosθf(rcosθ,rsinθ)rdr
B、∫0πdθ∫02asinθf(rcosθ,rsinθ)rdr
C、∫-π/2π/2dθ∫02acosθf(rcosθ,rsinθ)rdr
D、∫-π/2π/2dθ∫02asinθf(rcosθ,rsinθ)rdr

答案B

解析
转载请注明原文地址:https://jikaoti.com/ti/KHGRFFFM
0

最新回复(0)