[別館]球面倶楽部零八式markIISR

東大入試数学中心。解説なので解答としては不十分。出題年度で並ぶようにしている。大人の解法やうまい解法は極めて主観的に決めている。

1906年(明治39年)東京帝國大學工科大學(數學2問)

2019.02.22記

[1](數學)Geometrically show that d(pqr)=qrdp+rpdq+pqdr.

[2](數學)By British regulations of the parcel post, a parcel must not exeed 6ft in the sum of length and circumference. Find the length and volume of the most voluminous cylindrical parcel.

[3](力學)A body slides down a rough inclined plane with an initial velocity of 2 ft per second under the gravity. The plane is inclined at an angle of 30^{\circ} to the horizon, the coefficient of friction being 0.1. Find the time required and the velocity obtained by the body in moving through 100 ft along the inclined plane.

[4](力學)Find the rate of work in ft-pounds per minute of a cascade falling through a height of 30 ft and discharging 150 cubic ft per second. Weight of 1 cubic ft of water is equal to 62.4 pounds.

解説:手元にある最古の東大入試問題。

1906年(明治39年)東京帝國大學工科大學-數學[1] - [別館]球面倶楽部零八式markIISR
1906年(明治39年)東京帝國大學工科大學-數學[2] - [別館]球面倶楽部零八式markIISR