Find the position vector R(t) and velocity vector V(t), given the acceleration A(t) and initial position and velocity vectors R(0) and V(0), respectively.
A(t)= t^2i-2t^(1/2)j+e^(3t)k; R(0)= 2i+j-k; V(0)=i-j-2k

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

With finding limits of multi variable !

Tell whether the two rates form a proportion