Question

I posted the answer with this. I just want to understand how they got the answer.

92 Consider a fluid that flows through three-dimensional space (with an ryz- coordinate system). In a number of fixed points in space the fluid velocity v is measured as a function of the time t. Based on these measurements it appears that in a certain time interval the velocity can be approximated (interpolated) in the following way ay+bz Determine, based on this approximation of the velocity field as a function of time, the associated acceleration field as a function of time, thus: a(x,1)

Answer 1

f t daldt ltイ d b itat 2 Ch dt Un 그 dyy duz dt d t (+.et ) | aca)-t b闕ㄧ一(astbzJ& 1ナで d七 dt

NOw Gy 0 a1 d t t at) dt Itt) 1十.rk txt) CHt)