Question 1. What is called a function

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Uploaded: 20.06.2012
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Task 1
Question 1. What is called a function?
1. number;
2. The rule by which each value of argument x corresponds to one and only one value of y;
3. vector;
4. matrix;
5. there is no right answer.
Question 2. How is it possible to determine the inverse function?
1. when each element has a unique inverse image;
2. When the function is constant;
3. When the function is not defined;
4. When the function is multi-valued;
5. there is no right answer.
Question 3. What function is called Limited?
1 reverse;
2. The function f (x) is bounded, if mf (x) M;
3. complex;
4. The function f (x) is called bounded if f (x)> 0;
5. The function f (x) is called bounded if f (x) 0;
Question 4: What is the point is called a limit point of A?
1. zero;
2. t.h0 called a limit point of A if every neighborhood of x0 contains a point of A different from x0;
3. does not belong to the set A;
4. there is no right answer;
5. lying on the boundary of the set.
Item 5. Can be a limit at the point when one-sided limits not equal?
1. yes;
2. Sometimes;
3. No;
4. always;
5. there is no right answer.

Task 2
Question 1. Is the function of infinitesimal when?
1. yes;
2. No;
3. sometimes;
4. always;
5. there is no right answer.
Question 2. Is the function is infinitely large at?
1. yes;
2. No;
3. sometimes;
4. if x = 0;
5. there is no right answer.
Question 3. Is the function y = sin x infinitely large when?
1. yes;
2. No;
3. sometimes;
4. always;
5. there is no right answer.
Question 4. Is the function y = cos x infinitely large when?
1. yes;
2. No;
3. sometimes;
4. always;
5. there is no right answer.
Question 5. Is the function y = tg x infinite in Vol. X0 = 0?
1. yes;

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answers to 18 tasks on 5 questions

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