We first define the function as a variable, myFirstFun, using the keyword function, which also receives n as argument (no type specification). The latter will exist within the function. We used an integer, but 'n' could also be a vector or a matrix or a string: R handles all this nicely for us.
America in the 20th Century. The 20th century heralded the beginning of a new era in fitness. President Theodore Roosevelt, perhaps the most physically fit president ever to occupy the Oval Office, used his power and own example to encourage U.S. citizens to be physically active.
Find information on the benefits of physical activity, examples of moderate physical activity, and advice for beginners. President's Council on Fitness, Sports & Nutrition. Understand the types and amounts of physical activity that offer important health benefits. The President's Council on Fitness, Sport & Nutrition.