1 Pneumonia is inflammation of the airspaces in the lungs, most commonly due to an infection. 2  Pneumonia may be caused by viruses, bacteria, or fungi. 3  The most common bacterial type that causes pneumonia is Streptococcus pneumoniae. 4  Signs and symptoms of pneumonia include. 5  fever, 6  chills, 7  cough, 8  shortness of breath, 9  fatigue.
The age may vary from 15 to 18 years. There are many types of calculus. and age vary for all. primitive calculus: kids learn this type of calculus at their very beginning age of 6-7 years. linear: solving for equations , kids learn this type of calculus at the age group of 8-10 years. geomertical: at the age of 10-12 years they get expert in this type of calculus. trigonometrical: at the beginning of teen age they start to learn this type of calculus.
Both branches make use of the fundamental notions of convergence of infinite sequences and infinite series to a well-defined limit. Generally, modern calculus is considered to have been developed in the 17th century by Isaac Newton and Gottfried Leibniz. Today, calculus has widespread uses in science, engineering and economics and can solve many problems that elementary algebra alone cannot. Calculus is a part of modern mathematics education. A course in calculus is a gateway to other, more advanced courses in mathematics devoted to the study of functions and limits, broadly called mathematical analysis. Calculus has historically been called the calculus of infinitesimals, or infinitesimal calculus.