3. Write a function custom sort(v) that takes as input a vector v and as output returns the vector w sorted into increasing order. For example, if the input is [-21315), the output should be 1-2 11 35). Don't use the built-in "sort" function or anything similar. Hint: Consider call the function you wrote for Question 2 4. Write a function find square root(x, a, b) that takes as input a number x and as output returns the square root of x. a and b are the lower bound and upper bound. Your results should converge to at least 6 decimal places. Hint: bisection method, while loop, toleration (10-), 5. Write a matlab script file hw4.5 m to solve the differential equation dy dl with initial condition y(0)=0, from t=0 tot=10