 Hi and welcome to the session. Let us discuss the following question. Question says, the order of the differential equation 2x square multiplied by d square y upon dx square minus 3 dy upon dx plus y is equal to 0 is a2 b1 c0. D not defined? We have to choose the correct answer from a, b, c and d. Let us now start with the solution. First of all, let us rewrite the given differential equation. Given differential equation is 2x square d square y upon dx square minus 3 dy upon dx plus y is equal to 0. Now we have to find order of this differential equation. Now we know order of a differential equation is the order of the highest order derivative occurring in the differential equation. Clearly we can see highest order derivative occurring in this given differential equation is d square y upon dx square. So order of this differential equation is equal to 2. So we can write the highest order derivative present in the differential equation is d square y upon dx square. So its order is, now our correct answer is a. Now this is our required answer. This completes the session. Hope you understood the solution. Take care and have a nice day.