 Đ THI CHỌN HỌC SINH GIỎI CẤP CƠ SỞ CỤM: LỤC NAM  MÔN THI: TOÁN LỚP 11  Câu I. (5 điểm)  !"#$    % &'( ( %   )  &'(     π − − + = − * +,-.&/0' 12(3"4 1 "5067 "8"&&9&-:2;< (02=(3>,-.&&0 ?"&'@AB!C6/3 &D(3E-C !"F&D(3-G !"#H&>2I >H  &D(3-G !(02* Câu II. (4 điểm) $6(3J !"K !L29"   &M0N7O(3 %    &'/P     E   E  %            + − = =   − − = ∀ ≥ ∈  ¥ * Q "K !   )            *** ***  @            = + + + + + + + * Câu III. (4 điểm) $6-R !"#$  )  %       − + + + = &S) !<6T /<">,"B 6U"&8 (3&U !* Q !HJ          >6          → − + − + − + − + * Câu IV. (6 điểm) #' !6V"W !"X0-U&'-F !"#Y % ( )    ) + − = *$6 !"#$ &M0 -F !"#Y %Z>B &M0%L20[A\"4 % E   − *%"T6E"](3/^ ! − * '>_ !"#`*ZZZ&S>B"#2 !-R6&M0Z*V"W !%a-L20AB (' !(' !AHZABZ*b9&-\ "?"N< &M0$ >_ !"#`;&c"/P6V"W !%a* '"GN< E!XE>d >.">B"#2 !-R6&M0ABE>B"#X !"T6&M0 "06!9&*X>B!0'-R6&M0AB* G !6 #^ !AH6X-R6"#' !;I !!0 E"0>2I &S )   ! "+ + + = uuur uuur uuur uuur uur * Câu V. (1 điểm)'N7O(3 %    -.&e9&-\  % %  *  E % EEE***      + + + − = = * G !6 #^ ! ( )       ***    − + + + + > * ………………… HT ……………… #$%&'((((((((((((((((()(())(*+,-.((())((()) fgh .  Đ THI CHỌN HỌC SINH GIỎI CẤP CƠ SỞ CỤM: LỤC NAM  MÔN THI: TOÁN LỚP 11  Câu I. (5 điểm)  !"#$