बीजगणितम् एवं भावना · Chapter Overview
From The Brāhmasphuṭasiddhānta, taught by Acharya T Krishnatrey. This lesson is free to read.
<pre data-block="statement">What this chapter covers | The same chapter 18 that gave the world zero also contains Brahmagupta's algebra. Here are the KUṬṬAKA ("pulveriser") for solving linear equations in whole numbers, the rule for quadratic equations, and above all the BHĀVANĀ ("composition") — a rule for combining two solutions of the "square-nature" equation Nx² + 1 = y² into a new one. The bhāvanā is the engine that Bhāskara II's cakravāla would later perfect.</pre>