FACTS ABOUT INTEGRAL CALCULUS

• The process of finding integrals is called integration.

• The  equivalent word  of integration is Summation.

• Newton and Leibniz formulated the principles of Integration.

• The notation for the indefinite integral was introduced by Leibniz.

• Leibniz adapted the integral symbol  "∫" from the letter "long s" in latin.

    (The long S stands for summa- meaning - " sum" or "total")

• The notation for the definite integral with limits above and below the integral sign was introduced by Fourier.

 

• When limits are specified,

 

 the integral is called a definite integral.

• When the limits are omitted, as in

${\displaystyle \int f(x)\,dx,}$

the integral is called an indefinite integral,