The process for finding the maximum depends on the context in which you are looking for it. Here are a few examples:

- Finding the maximum value in a list of numbers: To find the maximum value in a list of numbers, you can use the max() function in Python or a similar function in other programming languages. For example, if you have a list named numbers, you can find the maximum value by calling max(numbers).
- Finding the maximum value in a data set: If you have a set of data and want to find the maximum value, you can sort the data in descending order and then take the first value. For example, if you have a list of test scores and want to find the highest score, you can sort the list in descending order and then take the first value. In Python, you can sort a list in descending order using the sort() method with the reverse=True argument, like this: scores.sort(reverse=True) and then access the first element with scores[0].
- Finding the maximum value of a function: To find the maximum value of a function, you can use calculus to find the critical points (where the derivative is zero) and then evaluate the function at those points to find the maximum. Alternatively, you can use optimization algorithms or numerical methods to find the maximum.

Double differentiate it and if result is less than zero it is maximum or if it is greater than 0 then it is minimum... u need to substitute the value that u get on first differentiated equation which is equated to zero in the double differentiated equation to know that max or min