6. This function is named annuities, takes these arguments rįn; compute and return s for display s =r ((1 + į)^(n + 1))/į - r
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- Write a function that displays an n-by-n matrix using the following header: void printMatrix(int n)Each element is 0 or 1, which is generated randomly. Write a test program that prompts the user to enter n and displays an n-by-n matrix.Exercise 1: //The max function the max between a and b, it returns a if a == //b public double max(double a, double b); //The mult function returns the result of a * b public double mult(double a, double b); //The exist in array function returns the index of the element //‘a’ if //‘a’ exist in array ‘arr’ otherwise returns ‘-1’ public int existsInArray(int [] arr, int a); //Are array equals method compares two arrays and returns true // if the elements of array ‘a’ are equal to elements of array // ‘b’, element by element. If equals it returns 0, it returns - // 1 if not public int areArrayEquals(int [] a, int [] b); Devise four executable test cases for every method in the JUnit notation. See the attached handout for a refresher on the notation.Python Coding Exercise: Write a function that takes three parameters: a 2-D array arr, a row location i, a column location j and returns a float representing the fraction of neighbors around arr [i,j] # write your function here:def find_frac(arr,i,j):
- Write a function that returns trueif the product of an array is divisible by the sum of that same array. Otherwise, return false. Example: divisible([3, 2, 4, 2]) →false WRITE IN PYTHON PLEASEDefine a function named reverse() that accepts an array of strings and display it in the reverse order. Example: Given the array: $a=array(“apple”,”orange”,”banana”,”kiwi”) The function must display: kiwi banana orange apple 2. Create an array and call the function reverse()Matrix Addition• Write an addition function that accepts two 2D numpy arrays, andreturns the sum of the two (if they are the same size). This functionshould test that the arrays are the same size before performing theaddition. If the arrays are not the same size, the function shouldreturn -1. solve in python
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