... "t=0," "(dx)/(dt)=1 y=sqrt(3)t- 5t ^(2)+t^(3) implies (dy)/(dt)=sqrt(3)- 10t +3t^(2)," At "t=0," "(dy)/(dt)=sqrt3 therefore At t=0," "(v(y))/(v(x))=tantheta ...
確定! 回上一頁