solution of differential expression

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Uploaded: 10.06.2006
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raschёtka math surrendered in Polytech (Tula) 5
190.Nayti general solution of differential expression
xy` + y = xsinx | \u200b\u200b∙ => y` + = sinx
191. Find a particular solution of second order differential equation that satisfies the initial conditions.

y`` + y`-2y = 6x2; y (0) = - 4; y` (0) = - 1.
212. Find the interval of convergence of and explore the convergence on the ends of the interval
253. The probability of hitting the target in one shot is 0.8.
Write probability distribution of hitting the target with 5 shots and build probability distribution polygon
The random variable x given cumulative distribution function F (x). Search:
1) differential distribution function;
2) the expectation of M (x);
3) dispersion D (x);
305. Given the complex numbers. Required
a) perform operations on complex numbers and write the answer in algebraic form;
b) Find all the values \u200b\u200bof the root and represented in algebraic form

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