8.1.1.138 FIRST Order Differential Equations

Condition: Solve the problem of Koshi: 1) \ (y^{\ prime} = 2 y+2, \ quad y (0) = 0 \) 2) \ (2 y y^{\ prime} = y^{2} +1, \ quad y (\ ln 2) = 1 \) 3) \ (( y^{\ prime} = y-x+1, \ quad y (0) = 1 \)