Brahmagupta The Mathematician
Brahmagupta-he followed the footprint of Aryabatta (which I mentioned in my previous hub “History of science2”).His lifetime was between AD 598 and AD660.We can say Brahmagupta was a maestro in Indian mathematics.
Brahhmaguptha born in "Bhillamala", in Sindh district, which is in Pakistan now. His father’s name is Jishnu.He was a member of the king Vikramadithya’s royal assembly.the book “Brahma sphuda Sidhantha” was the famous book of Brahmagupta.He wrote another book named “Khanda Khadhyaka”.Brahmagupta wrote “Brahma sphuda sidhantha” in his 33 years of age, and “Khanda Khadhyaka”in the age of 68.
In “Brahma Sphuda Sidhantha”, we can see some chapter about pure mathematics. In that chapter he wrote about Algebra, Trigonometry and geometry.Brahmagupta started the study about ‘zero’. In that time, he made many experiments with zero. He researched about dividing any number with zero. Today we call the answer as infinity. However, on that time he called it as “khachedam”.He made his experiments on “surd”.
He discovered the formulas for finding the volume of sphere and cone. He found out the method to find out the distance of diagonals of a rectangle. He found out the method to find out the value of a, b and c for a formula a²+b²=c².But the result was published by another scientist named “Fiboncci”.so we today learn this formula by his name only."Fibonacci" lived in 13th century.Brahmagupta invented the formulae SinA/a=SinB/b+SinC/c for an equilateral triangle in first time and the formulae a²=b²+c²-2bcCosA.like this he donated so many inventions towards mathematics.
In history, we can see that Arabians came in touch with Indian mathematics. When the king of Arabia decided to develop the Bagdad town as a Centre of science, he invited the scientists from worldwide to Bagdad. The main scientist from India was Kankan. He was a mathematician. Kankan taught the Arabian “Brahma Sphuda Sidhantha”.It happened in AD 770.The Arabian scientist Mr.Al-Faseeri translated Brahma Sphuda Sidhantha to Arabi.The name of the book was “Sindhing”This book got much popularity in Arabia. However, in India that books and the knowledge went in to darkness. The famous passenger Mr.Albaruni came to India in 11th century .he wrote that Indians lost the even last copy of those historic creations.