De thi dai hoc nam 2014 lan 2 mon toan cua Nhat Ban (de 2)

De thi dai hoc nam 2014 lan 2 mon toan cua Nhat Ban (de 2) De thi dai hoc nam 2014 lan 2 mon toan cua Nhat Ban (de 2) De thi dai hoc nam 2014 lan 2 mon toan cua Nhat Ban (de 2) De thi dai hoc nam 2014 lan 2 mon toan cua Nhat Ban (de 2) De thi dai hoc nam 2014 lan 2 mon toan cua Nhat Ban (de 2)

2 a b a>0 2 f x/ D 2x g.x/ a b f x/ g.x/ f x/ D g.x/ f x/ 4x C 5; g.x/ D x C ax C b x A (i) a2 bD f x/ D g.x/ x x2 (ii) C B aC Á D a2 x E C a>0 H aD f x/ D g.x/ bD K x IJ FG D0 A D f4mjm L g B D f6mjm g O n n2A n n2B n 24 L M n2A[B n n2A\B n 12 N O C D fmjm Á A[B \C A B 1) 2) 1 q>1 e 2x t D ex t t2 logq p ae x C b D at C b D logp3 q a A bD aD p q p>1 q>1 a q H I C D B logq p C logp q > q J logp q D K xD L loge M E F G M logp q a t Q P y D ax P t ; at C x P ` y Q q R C p S2 q S1 S2 S1 C ` A yD Q E x at B C x t S1 FG S1 D S2 I at M S1 PQR JK S2 D S1 S2 at H L a t S1 D S2 N at D C ` x fn x/ D sinn x n D 1; 2; 3; a b c lim x2 a x!0 aDb b x /2 Dc fn x/ O nD2 cD6 nD4 bD bD R S P Q T cD / fn x/ In D Z fn x/ sin 2xdx In D lim In n!inf C In C InC1 C n D 1; 2; 3; U nC C I2n V 2/ D Z W X Y D log / Z dx Cx ...A D f4mjm L g B D f6mjm g O n n2A n n2B n 24 L M n2A[B n n2AB n 12 N O C D fmjm Á A[B C A B 1) 2)