From the function f(x) = x^2 + 3, calculate: (2 points) a) The change in y when x varies from 4 to 4.5

b) The increment of the function when x = 2 and Δx = 0.01.

2.- Calculate the approximate value of the increment of the function () = 2^3 + 5, consider what’s indicated in the following points:

a) x changes from 3 to 3.02.

b) When x = 2 and Δx = 0.001

3.- Calculate the approximate decrease in the area of a circular burn when the radius decreases from 2 to 1.98 cm.