The brachistochrone problem refers to when the particle is only affected by gravity, it slides from one point along the curve ( ) to another point.
A. The shortest time
B. The shortest path
C. The maximum speed
D. None of the above answers
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1. For the functional mentioned in the video, which of the following statements is true . ( )
A. The functional maps a function to a function
B. The functional maps a function to a real number
C. The functional maps a real number to a real number
D. None of the above answers
Which of the following statements is true. ( )
A monotonic sequence has a limit
B. The monotonic decreasing sequence with an upper bound has a limit
C. The monotonic rising sequence with a lower bound has a limit
D. The monotonic rising sequence with an upper bound has a limit
Scientists’ predictions about human speed of 100 meters have been broken again and again, meaning that the so-called ‘limit’ of the speed of 100 meters does not exist! ( )
The visual illusion can be resolved by correction, but the usual measurement errors in life (such as measuring height, etc.) are unavoidable. ( )