सिद्धान्तशिरोमणि: गणिताध्याय (भास्कराचार्य - ग्रहगणित, मध्यमाधिकार व स्पष्टाधिकार सटीक)

41 and P₂ + (P₁ − P₂) = P₁ where P₁ and P₂ are the numbers of sidereal revolutions of a quick and slow moving planets respectively. Following the same principle as above we could obtain their positions by multiplying the equations through out by A/M and calling planets on the left-hand- side as (1) Dwiparyayāntarodbhava-graha subtracted from the quick-moving one and (2) the slow-moving planet increased by the Dwiparyayāntara-graha respectively. Verse 14. The difference of the Śīghra and Śīghra- Kendra as well as the Sum of the Mandoccha and the Manda Kendra give the planet to be computed. Or again a com- puted planet multiplied by the number of sidereal revolu- tions of a planet to be computed and divided by the number of sidereal revolutions of the computed gives the planet to be computed. Comm. U₁ − P = K₁ and P − U₂ = K₂ where U₁, P, U₂, K₁ and K₂ are respectively the number of Sidereal revolutions of the Śīghroccha, planet, the Mandoccha, the Śīghra-Kendra and the Manda Kendra ; hence, we have P = U₁ − K₁ = U₂ + K₂ from these equations also by multiplying througout by A/M , we have the planetary position as the difference of the Śīghroccha-graha and Śīghra Kendra-graha or the sum of the Mandoccha-graha and Manda-Kendra-graha. Again, if P₁, P₂ be the numbers of sidereal revolutions of a computed planet and one to be computed respectively and if p₁, p₂ be the computed planet and the one to be computed, then P₁ × A/M = p₁, P₂ × A/M = p₂ so that P₁/P₂ = p₁/p₂ ∴ (P₁ × p₂)/p₁ = P₂ which means that the position of the 6