Consider the following. (Round your answers to four decimal places.)f(x, y) = yex(a) Evaluate f(2, 1) and f(2.5, 1.65) and calculate Δz(b) Use the total differential dz to approximate Δz.

Step-by-step explanation:

Given the function f(x,y) = ye^x

To evaluate f(2,1), we will substitute x = 2 and y = 1 into the given function to have;

f(2,1) = 1×e^2

f(2,1) = e^2

f(2,1) = 7.3891(to 4dp)

For f(2.5, 1.65), x = 2.5 and y =1.65

f(2.5, 1.65) = 1.65e^2.5

f(2.5, 1.65) = 1.65×12.1825

f(2.5, 1.65) = 15.2281 (to 4dp).

∆z = f(2.5, 1.65) - f(2, 1)

∆z = 15.2281-7.3891

∆z = 7.8390

dz = fxdx + fydy

fx is the differential of the function with respect to x keeping y constant.

Since f(x,y) = ye^x

fx = ye^x + 0e^x

fx = ye^x

dx = x2-x1 = 2.5-2

dx = 0.5

fy = e^x

dy = (y2-y1) = 1.65-1

dy = 0.65

Using the point (2, 1) for x and y and substituting the values gotten into dz function:

dz =ye^x(0.5) + e^x(0.65)

If x = 2 and y = 1

dz = 1e^2(0.5) + e^2(0.65)

dz = 7.3891(0.5)+7.3891(0.65)

dz = 7.3891(0.5+0.65)

dz = 7.3891(1.15)

dz = 8.4975

step-by-step explanation:

6. 104

7. 52/37

8. 2704

9. 140608

10. -52

11. |52|=52

12. 1/52

13. 156

14. 26

15. 40

16. 37

17. -364

18. 53 1/3

19. 50.96

20. 43 2/3

21. 78

22. 50.75

23. 47.63

24. 163.28

25. 10400

26. 338

27. 208

28. 2704 square inches

29. 312 square meters

30. don't know what its asking, tell me so i can tell you

31. 8490.56

32. 52 degrees would be an acute angle

33. 128 degrees

34. 20.8

35. 39

36. 208