According to the nature of two-dimensional biharmonic equations,this paper obtains a polynomial solution of the biharmonic equation for stress function by means of the MATHEMATICA software.
You'll hear a customer services official giving information to a passenger at a railway station in a town called Trebirch . First, you have some time to look at questions 11 to 17.
We used our data to address this question, and at least in the last 300 years, we found that the ladies do the hard work of migrating from places to places to form families.
And in the last video, we looked at how to get ideas, how to brainstorm ideas, choose them and answer the question with why these developments happened.