Đ THI HC K II NAM ĐNH !"#$%$&'()*($+", Câu 1( 3,0 điểm) &.$/$+"01%-23"4 ( ) ( ) ( ) ( ) + − + − − = 2 1 1 1 2 0x x x x *.$/$*5-+"01%-23"4 − 〈 1 3 2 2 3 x Câu 2( 2,0 điểm)$/$*($-6&7*8%99"':++"01%-23"4 ;--<"=$"("->?->',9@%$#6%A(BCDE"DFG',9%$#-20&9H%%(IJ -2#$)0&KL-D$AM$A:-N99":)"1BCDE"'(O<)P"JQ3-"FK-+"/$DFG 9":)6AM$BCDE"'(R+",-JS"T7U%D0#%?GJ Câu 3( 1,0 điểm) ""3"'V%-2WDX%?GJ?YGYY9ZDI'(-&)%$9?GA7%=?JG$F-?G[O9)K ?[9)K??Y[9)JS"B$\-S9"]7%T7&"9^&"3"'V%-2WDX%?GJ?YGYY DU9"J Câu 4( 3,0 điểm) "-&)%$9?GA7%=?!?G_?.9ZD0#%9&?J0#%-"`%&T7&GA(6% 6%AM$?9a-D0#%-"`%?-b$cJ . "X%)$"4-&)%$9GcDd%Bb%AM$-&)%$9G?cJ . e5ID$f)-2L9b"G6&9"G[J$&?9a-D0#%-"`%&-b$gJ G$F-?G[h9)K?c[i9)JS"B$\-S9"-&)%$9?GcA(-S"-j6N EK AK J Câu 5( 1,0 điểm) $/$+"01%-23"4 ( ) ( ) ( ) ( ) + = + − − − − 1 2 1 2 1 1 3 3x x x x x k l4 Câu1 &P ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) R R R x x x x x x x x x x x x x + − + − − = ⇔ − + + − = − = = ⇔ − + = ⇔ ⇔ + = = − A:I-:+%"$\)9^&+-'([ { } m R− *P ( ) R R R J R h R O O x x x x x − − − 〈 ⇔ 〈 ⇔ − 〈 ⇔ − 〈 ⇔ 〉 A:I-:+%"$\)9^&*5-+-'( P S x x − = 〉 Câu2 n$R+",-[Ki%$# o$T7U%D0#%?G'(]!<).D<$\]p "#$%$&BCDE"D$->?G'(@[h%$# "#$%$&-"C9-FD$->?G'(hqKh[hKi%$# Q:-N9BCDE"D$->?G'( h x !<)P". Q:-N9-"C9-FD$->?G'( hKi x !<)P". Q3A:-N9-"C9-F9":)"1A:-Z9BCDE"'(O!<)P".L-&9Z+"01%-23"4 O O h hKi x x x− = ⇔ = !-"/)UD<$\. Q:IT7U%D0#%?G'(O!<).J Câu3 ABC∆ A7%-b$?L-"rDE"'sl$-&%-&9Z4 O ! .BC AB AC BC cm= + ⇒ = + = $\-S9"]7%T7&"'V%-2WDX%?GJ?YGYY'(4 ( ) ( ) O J xq S cm= + + = 12cm 6cm 8cm C' B' A' B C A Câu4 &PA3GcPP?K? ⊥ ?G!% AB BE⇒ ⊥ HBE BAE∆ ∆: !Q3'("&$-&)%$9A7%9Z%Z9?cG9"7%. *P qA3-&)%$9?GcA7%-b$GL-"rDE"'sl$-&%-& 9Z4 i h R! .BE AE AB BE cm= − ⇒ = − = B$\-S9"-&)%$9?Gc'(4 ( ) hJR O cm= q&9Z ⊥AE BI -b$K)(G[L?c'(D0#%-27% -2C99^&DbG!-"rDE"%"t&. = ⇒ = ia ie ba be !-"r-S"9"5 DZ ∆ = ∆ ( . . )AIE ABE c c c ⇒ · · = = 0 90AIE ABE JDZc'(D0#%9&9^&-&)%$9?cg Q(?G9u%'(D0#%9&9^&-&)%$9?cg ⇒ = ⇒ = . . 2 2 EI AK AB EK EK EI AK AB )(c[cG[R!9). Q:I = 3 4 EK AK CÁCH 2 : -01%-C"0-2L-&P)D0v9?c'(+"w%$99^&%Z9G?g9^&-&)%$9G?g 3 4 EK AK EK EB EB AB AK AB = ⇒ = = !"r-S"9"5-D0x%+"w%$99^&-&)%$9. Câu 5 AM$gy 0;1;3x ≠ &9Z4 ( ) ( ) ( ) ( ) § § 1 2 1 2 1 1 3 3 1 1 1 1 1 2 1 3 1 3 1 2 1 ( / ) 2 x x x x x x x x x x x x t m KX + = + − − − − ⇔ − + − = + − − − − ⇔ − = − ⇔ = Q:I-:+%"$\)9^&+-'([ 1 2 − 5 4 K I E H C B A