The lengths of the two links are a1 = 3 ft and a2 = 2 ft. The desired position of the endpoint of the two-link robot needs to move from 3i – 4j to 3i + 4j as a straight line.

1. Set the orientation of the robot at start point as a straight line to locate endpoint at 3i – 4j. With this configuration, calculate the angles of θ1 and θ2. In the code listed in the next page, replace the value of theta11 with θ1 and theta21 with θ1. These two angles are the starting points.
2. Calculate the angles of θ1 and θ2 with the second link lies horizontally. Keep in mind that the endpoint of the two-link mechanism must be located at x = 3 ft. In the code listed in the next page, replace the value of theta12 with θ1 and theta22 with θ1. These two angles are the starting points.
3. Use the following code with the calculated results to simulate the angular movement of the two joints. Observe the movement of the endpoint of the mechanism.
4. Determine if the endpoint moves along a straightline.

1. package newton’s method for approximating square roots (case study 3.6) in a function named newton. this function expects the input number as an argument and returns the estimate of its square root. the script should also include a main function that allows the user to compute square roots of inputs until she presses the enter/return key. 2. convert newton’s method for approximating square roots in project 1 to a recursive function named newton. (hint: the estimate of the square root should be passed as a second argument to the function.) 3. elena complains that the recursive newton function in project 2 includes an extra argument for the estimate. the function’s users should not have to provide this value, which is always the same, when they call this function. modify the definition of the function so that it uses a keyword parameter with the appropriate default value for this argument, and call the function without a second argument to demonstrate that it solves this problem. 4. restructure newton’s method (case study 3.6) by decomposing it into three cooperating functions. the newton function can use either the recursive strategy of project 1 or the iterative strategy of case study 3.6. the task of testing for the limit is assigned to a function named limitreached, whereas the task of computing a new approximation is assigned to a function named improveestimate. each function expects the relevant arguments and returns an appropriate value. 5. a list is sorted in ascending order if it is empty or each item except the last one is less than or equal to its successor. define a predicate issorted that expects a list as an argument and returns true if the list is sorted, or returns false otherwise. (hint: for a list of length 2 or greater, loop through the list and compare pairs of items, from left to right, and return false if the first item in a pair is greater.)

Auser is given read permission to a file stored on an ntfs-formatted volume. the file is then copied to a folder on the same ntfs-formatted volume where the user has been given full control permission for that folder. when the user logs on to the computer holding the file and accesses its new location via a drive letter, what is the user's effective permission to the file? a. read b. full control c. no access d. modify e. none of the above

Match the file formats with the types of multimedia they can store