only part(d), please show me the process.

5. This problem is important for our development in the neat chapter. Be Suppose you want to find an approximate representation for a function ire you understand it! (x, y) that is valid near a- 1, y- 2. Namely, you want to have d near 1, y 2. Namely, you want to have Use the ideas from the beginning of this chapter to find the coefficients. What are the four coefficients for the third order terms that have the form (a 1)3, ( 1)2 (y 2), ( 1)(y 2)2, (y -2)3? How many coefficients are needed for the fourth order terms? d. Find the Taylor Series approximation up to order two near0,y- off (x, y) :" cos(y)