| 次の問題を解いてみたのですがこれで正しいか見ていただけますでしょうか?
[Q] One of Kapler's three law of planetary motion states that the square of the period, P, of a body orbiting the sun is proportional to the cube of its average distance, d, from the sun. The earth has a period of 365 days and its distance from the sun is approximately 93000000 miles. (1) Find P as a function of d. (2) The planet Jupiter has an average distance from the sun of 483000000 miles. How long in earth days is a Jupiter year?
((1)の解) 「the square of the period, P, of a body orbiting the sun is proportional to the cube of its average distance, d, from the sun,」より P^2=kd^3 (但し,kは定数)
((2)の解) 「The earth has a period of 365 days and its distance from the sun is approximately 93000000 miles」だから, (1)より, 3652=k・93000000, thus k≒698.06718と書ける。 従ってJupiter yearをPとすると , P^2=698.06718・483000000^3と書ける。 従って,P≒12761324157.697526747813958892904.
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