age of calculus
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.