Question: (a) Find the differential dy and (b) Evaluate dy for the given values of and dx. 21. y = x + 2x. x= 3, dx

(a) Find the differential dy and
(b) Evaluate dy for the given values of and dx.

21. y = x + 2x. x= 3, dx = 22. y = e*, x = 0, dx = 0.1 23. y = 4 + 5x. x= 0, dx = 0.04 24. y = 1/(x + 1), x= 1, dx = -0.01 25. y = tan x, x- 7/4. dx = -0.1 26. y = cos r, x= 7/3. dx = 0.05 %3D

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