→ suker:令u=288-0.005z du=-0.005 dz,代換一下就可 118.169.73.131 03/31 20:47
→ suker:1/(-0.005) ∫1/u du =1n u /(-0.005) +C 118.169.73.131 03/31 20:48
→ suker:u換回z 原式=1n|288-0.005z∣/(-0.005) +C 118.169.73.131 03/31 20:50
→ chisheng74:3Q 122.116.61.116 03/31 22:12