Math

Let u(t) = 61 1 + (1- - 1) j-9k and v(1) =e'i +7 e "j- e"k. Compute the derivative of the following function. u(t) - v(t) Select the correct choice below and fill in the answer box(es) to complete your choice. O A. The derivative is the vector-valued function Di + ( + O B. The derivative is the scalar function