Q.7 Show how you can solve the following problems using MATLAB. (a) y = 1* 4x + 6x + 2 dx (2 marks) (b) y(t) = 9+2 +20+ - 0.05. Solve any for t = 0 to 20 for interval of 0.01. (3 marts) You are required to write the class definition for a class called BMI. The class has only two properties (height weight), one constructor that accepts two parameters h and w, which assigns the value of h and w to the properties height and weight respectively, and one user-defined method called My BMI that returns the BMI. BMI is computed as follows, Q.8 BMI weight height2 5 marks)