In probability theory, the expectation of a discrete random variable X is the sum, calculated over all values that X can take, of : the product of those values and the probability that X takes that value.
In the case of a continuous random variable, it is the corresponding integral.
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Mathematics"mathematics" is a plural noun already, the subject is Mathematics!
mathematics
there is no difference between Mathematics and Arithmetic because Arithmetic is a branch of mathematics. there is no difference between Mathematics and Arithmetic because Arithmetic is a branch of mathematics.
what is the role of computer in mathematics what is the role of computer in mathematics
There is no evidence Egyptian and Greek mathematics are linked.