Why circumference of a circle is 2πr and area is πr^2 ?
From where did π came ? During the very early days of mathematics, people had a great use of circles, circles were everywhere, for...
Factorial and why 0! = 1.
We all are familiar with factorials and their implications in combinatorics, algebra and mathematical analysis and we all have seen this...
Evaluating the nested radical.
Infinite series are one of the most beautiful looking expressions in mathematics and it is fun to solve them, sometimes they converge to...
1 + 2 + 3 + ... = -1/12
What a normal person would think of this sum 1 + 2 + 3 + 4....... ? Everyone will agree that the sum is increasing and increasing all the...