to'g’ri chiziqlarga doir ayrim masalalar
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1662926815.doc 1 2 1 2 1 a a a a tg tg tg tg × + - 1 2 1 2 1 k k k k tg × + - = j 2 2 2 2 2 1 2 1 2 1 2 1 cos b a b a b b a a + × + + = j ) ; ( b a n = ® n n n а в d 2 2 + × а в 2 2 + а в 2 2 + d ax by c a b ax by c a b = ± + + + = + + + 0 0 2 2 0 0 2 2 4 9 + 13 to¢gri …
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