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625 uHnóŒÆ 2015côÖa¬Æ ïÄ)\Æ•ÁÁò £ž3‰K’þ‰‰§Áòþ‰‰Ã §Á ò7L†‰K’˜Ó £¤ ‰8¶¡µêÆ©Û ·^;’µÄ:êÆ, OŽêÆ, VÇØ†ênÚO, A^êÆ, $ÊÆ†››Ø 3• 1. (12©) f(x) = 2 sin(x − 2) + ([x] − 1)x2 − 2([x] + 1)x + 8 (x − 2)2 , ¦ lim x→2−0 f(x)9 lim x→2+0 f(x). 2. (12©) 3-‚x = 2t2 , y = 3t2 , z = 2tþ(½:, ¦3T:? ƒ‚²1 ux2 + y2 + z2 = 43:(1, −1, √ 2)? ƒ²¡. 3. (12©) f(x) = x2 ln x + 1, x > 0, 1, x = 0, 2(1 − cos x) x2 , x < 0. ïÄÙ ê ëY5. 4. (12©) l• ±x2 + y2 + z2 = 1, x + y + z = 0. lx¶ •w , U _ž ••, OŽ-‚È© l 2ydx + 3zdy + 4xdz. 1 1 •
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