Answer Happy

Questions 1-3. Work out the following four questions with subsitution showing explicitly what what u and say du/dy(or du/dx) is and show the substitution all in terms of the new variable u. 1. 2. 3. I = I 1 = √3 +√√y √y 1 3x sec (π ln x) 4 = 5₁² I = -dy dx, x > 1 dx √x - 2x