Write a MATLAB program on Octave that calculates the time of flight, maximum height, and horizontal range of a projectile. Your program should ask the user to enter initial speed and launch angel. Then your program should do calculations and output the time of flight, maximum height, and horizontal range. For the output, use 'fprintf function. 2v sin e Time of flight về sin²e Maximum height reached 28 về sin 20 Horizontal range Note that g=9.81 Copy/paste your code and output below: Important note: Please explain your code step by step using %

Write a C++ program to compute the surface-area of a cylinder, given the radius (R) and the height (H). The program must ask the user to enter R and H. It then prints the surface-area with a proper message in the main program. Define a function to compute the surface-area and let main() call it. Clearly show the function prototype. This function takes the radius R and height H as parameters and returns the surface area. The formula for computing the surface-area of a cylinder is 2πR(H + R), where ? = 3.141   Write a function called isValidLength that takes an integer number and returns true if the number has a valid length and false otherwise. Valid- length is determined by finding number length. If the length is at least 3 digits and at most 5 digits, then the number has a valid length. For example, the number 324 is valid because it's 3 digits long and the number 22 is invalid because it’s 2 digits long.   Write a function called isValidDigits that takes an integer…

In the U.S. fuel efficiency of cars is specified in miles per gallon (mpg). In Europe it is often expressed in liters per 100 km. Write a MATLAB user- defined function that converts fuel efficiency from mpg to liters per 100 km. For the function name and arguments, use Lkm=mpgToLpkm (mpg). The input argument mpg is the efficiency in mi/gl, and the output argument Lkm is the efficiency in liters per 100 km (rounded to the nearest hundredth). Use the function in the Command Window to: (a) Determine the fuel efficiency in liters per 100 km of a car whose fuel effi- ciency is 21 mi/gal. (b) Determine the fuel efficiency in liters per 100 km of a car whose fuel effi- ciency is 36 mi/gal.

Define a function calc_total_inches, with parameters num_feet and num_inches, that returns the total number of inches. Note: There are 12 inches in a foot.Sample output with inputs: 5 8 Total inches: 68

Write a function that receives a positive integer n as a parameter, then it must calculate the sum 1+2+3+...+n. Finally return the result of the sum and in the main function print that result to the screen. The output of the program should be just the value of the sum. Look at the example. Input: A positive integer n Output: The result of the addition 1+2+3...+n Program execution example: Entry 6 Departure twenty-one Entry 5Output fifteen Entry 7 Departure 28