3. (1) The general non-linear Bernoulli equation is given by using the substitution u = y1 n, show the calculation details by which we reduce the non-linear Bernoulli equation to a linear first order equation of the form du de + (1-n)p(x)u = r(x)(1-n) (2) Find the values of n, P(x), u) and rx), in the following Bernoulli equation, dr dy +p(z)y = g(x) reduce this equation to one of the formi method es Ple)ds to find the solution. and then use t he integrating factor dx 10 mark