Write simple python code of y''+2y'-3y = 0, y(0) = 2, y'(0)=1 with modified euler method and 4th order runge-kutta kutta method

Assume that you have an sorted array of records. assume that the length of the array (n) is known. give two different methods to search for a specific value in this array. you can use english or pseudo-code for your algorithm. what is the time complexity for each algorithm and why?

Pthreads programming: create and terminate a thread write a c++ program that creates a thread. the main will display a message “hello world from the main”. the main will create a thread that will display a message “hello world from the thread” and then terminates with a call to pthread_exit()

If a client wants to make minor edits, what should he/she use?