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. 1_ / ³ day I= = (1 + √y) √y ' = 1 1 3x sec (π ln x) dx, x > 1 4 dx 1-S₁ - I = 3 √√x - 2x