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

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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
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