大学数学微积分的简单应用题 美国大学的 读不懂题A ballon is rising from the ground.When it is 30 meters above the ground,it is rising at a rate of3 meters per second.An observer is on the ground 40 meters from the point where the

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/29 11:50:05
xUN@~yRMh'k*MlKڪU" ?ƬB .3Wݽڋ6 3s3sI,ZoԱ]ٷwN(XsUBS\5q?KI\FƆ,!AE :ZSdiq+ʽ󰭹<yWT[|b ETCQD5kiHWʯ@,!9,AϘЂ/gICq^4#1eT!JVuAUU@ܓ VԶ;3b? !"Ϥ^O Xz'llhS4 ڑ7WRy%#}[W)lHTH6m}tRVdyB^%Faw{d5>q c"!` \Rۥ ElY叴rIXi9%@C9/GrG9+Bpi=i?Q,xP9{8~V \.KŰ.:xR{d餚 Sf' pځKӖq&΀JrwdkY7O@go#o[f7ԡ(8uS7}Fڮp3?H䞦ѥehLpиz3g~(