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Relations And Functions
Id U = {1, 2, 3, 4, 5, 7, 8, 9}, A = {2, 4, 6, 8} , B ={2, 3, 5, 7} verify De Morgan's laws:
= {1, 9} ....(i)
...(ii)
Hence, form (i)m and (ii), we have
(b)
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Collection of all odd integers.
Collection of all divisors of 42.
Collection of beautiful girls in India.
Fill in the blanks in the following table:
Numbers |
Closed under |
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Addition |
Subtraction |
Multiplication |
Division |
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Rational numbers |
Yes |
Yes |
No |
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Integers |
Yes |
No |
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Whole numbers |
... |
Yes |
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Natural numbers |
No |
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i9 + i19
3(7 + i7) + i(7 + i7)
Express each of the complex number given in the form of a + ib.
(1 - i) - (-1 + i6)
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