83.2 Chapter III. First order differential equations of the first degree. Ex. III at page 35

83.2.1 problem 1 (a)
83.2.2 problem 1 (b)
83.2.3 problem 1 (c)
83.2.4 problem 1 (d)
83.2.5 problem 1 (e)
83.2.6 problem 2 (a)
83.2.7 problem 2 (b)
83.2.8 problem 2 (c)