A mass m of a spring with constant k satisfies the equation mu" + ku = 0, where u (t) is the displacement at time t of the mass from the equilibrium position. a) Show that this equation can be converted into the system -k/m b) Find the solution of the initial value problem if the position of the spring at time O is 2 cm below the equilibrium position and its velocity is 0 cm / s. k) Graph the velocity and position on a single Cartesian plane.
Permutations and Combinations
If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.
Counting Theory
The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.
Can you help me with this problem please? especially with parts b and c
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